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• Azeiteiro, U., Bacelar-Nicolau, P., Caetano, F. & Caeiro, S. (2015). Education for sustainable development through e-learning in higher education: experiences from Portugal. Journal of Cleaner Production, Volume 106, 1: 308-319.
• Amador, F., Martinho, A.P., Bacelar-Nicolau P., Caeiro, S. & Oliveira, C.P. (2015). Education for sustainable development in higher education: evaluating coherence between theory and praxis. Assessment & Evaluation in Higher Education, 40:6, 867-882, DOI: 10.1080/02602938.2015.1054783.
• Blumstein, D. & Saylan, C. (2007). The Failure of Environmental Education (and How We Can Fix It). PLoS biology. 5. e120. 10.1371/journal.pbio.0050120. Brace, N., Kemp, R. & Snelgar, R. (2016). SPSS for Psychologists, 6th edn. Palgrave: Macmillan Education.
• Caeiro, S. Hamón, L., Martins, R. & Aldaz, C. (2020). Sustainability Assessment and Benchmarking in Higher Education Institutions—A Critical Reflection. Sustainability, 12(2), 543.
• Chen, D.M-C., Bodirsky, B.L., Krueger, T., Mishra, A. & Popp, A. (2020). The world's growing municipal solid waste: trends and impacts. Environment Research Letters. 15 074021.
• Cook, S. & Berrenberg, J. L. (1981). Approaches to encouraging conservation behavior: a review and conceptual framework. Journal of Social Issues, 37 (2): 73-107.
• Dalberg Advisors. (2019). No Plastic in Nature: Assessing plastic ingestion from nature to people. WWF. Gland, Switzerland. Accessed 15th March 2020 at https://d2ouvy59p0dg6k.cloudfront.net/downloads/plastic_ingestion_web_spreads.pdf.
• Department of Economic and Social Affairs (n.d.)a. Goals 12 Ensure sustainable consumption and production patterns. United Nations. Retrieved 30 March 2022 from https://sdgs.un.org/goals/goal12
• Department of Economic and Social Affairs (n.d.)b. Goals 14 Conserve and sustainably use the oceans, seas and marine resources for sustainable development. United Nations. Retrieved 30 March 2022 from https://sdgs.un.org/goals/goal14
• Digby, C.L.B. (2010). An Examination of the Impact of Non-formal and Informal Learning on Adult Environmental Knowledge, Attitudes, and Behaviors. A dissertation submitted to the Faculty of the Graduate School of the University of Minnesota in partial fulfillment of the requirements for the degree of doctor in Philosophy. University of Minnesota.
• Disinger, J.F. & Roth, C.E. (1992). Environmental Education research news. The Environmentalist, 12: 165-168.
• Farinha C., Azeiteiro U. & Caeiro S. (2017) Education for Sustainable Development Through Policies and Strategies in the Public Portuguese Higher Education Institutions. In: Leal Filho W., Azeiteiro U., Alves F., Molthan-Hill P. (eds) Handbook of Theory and Practice of Sustainable Development in Higher Education. World Sustainability Series. Springer, Cham.
• Farinha, C., Azeiteiro, U. & Caeiro, S. (2018). Education for sustainable development in Portuguese universities: The key actors’ opinions. International Journal of Sustainability in Higher Education, Vol. 19 No. 5, pp. 912-941. https://doi.org/10.1108/IJSHE-09-2017-0168
• Farinha, C., Sandra Caeiro, S. & Azeiteiro, U. (2019). Sustainability Strategies in Portuguese Higher Education Institutions: Commitments and Practices from Internal Insights. Sustainability, MDPI, Open Access Journal, vol. 11(11), pages 1-25.
• Filho, W., Wu, Y.J., Brandli, L., Avila, L., Azeiteiro, U., Caeiro, S. & Madruga, L. (2017). Identifying and overcoming obstacles to the implementation of sustainable development at universities, Journal of Integrative Environmental Sciences, 14:1, 93-108, DOI: 10.1080/1943815X.2017.1362007.
• Fonseca, L.M., Portela, A.R., Duarte, B., Queirós, J. & Paiva, L. (2018), “Mapping higher education for sustainable development in Portugal”, Management & Marketing. Challenges for the Knowledge Society, Vol., 13, No 3, pp. 1064-1075, DOI: 10.2478/mmcks-2018-0023.
• Goulgouti, A., Plakitsi, K., & Stylos, G. (2019). Environmental Literacy: Evaluating Knowledge, Affect, and Behavior of Pre-service Teachers in Greece. Interdisciplinary Journal of Environmental and Science Education, 15(1), e02202. https://doi.org/10.29333/ijese/6287
• Gregory, J.R., Montalbo, T.M. & Kirchain, R.E. (2013). Analyzing uncertainty in a comparative life cycle assessment of hand drying systems. Int J Life Cycle Assess 18, 1605–1617.
• Hallfreðsdóttir, S. (2011). Eco Schools – Are They Really Better? Comparison of Environmental Knowledge, Attitude and Actions between Students in Environmentally Certified Schools and Traditional Schools in Iceland A thesis submitted in partial fulfillment of the requirements of Lund University International Master’s. Programme in Environmental Studies and Sustainability Science (LUMES). Lund University Centre for Sustainability Studies, LUND, Sweden.
• Krnel D. & Naglič, S. (2009). Environmental literacy comparison between eco-schools and ordinary schools in Slovenia. Science Education International,20(1/2): 5-24.
• Hollweg, K.S., Taylor, J.R., Bybee, R.W., Marcinkowski, T. J., McBeth, W. C., & Zoido, P. (2011). Developing a framework for assessing environmental literacy. Washington, DC: North American Association for Environmental Education.
• Hungerford, H.R. & Volk, T. (1990). Changing learner behavior through environmental education. The Journal of Environmental Education, 21 (3): 8-22.
• Igbokwe, A.B. (2012). Environmental Literacy Assessment: Exploring the Potential for the Assessment of Environmental Education/Programs in Ontario Schools. International Journal for Cross-Disciplinary Subjects in Education (IJCDSE), 3 (1): 640-656.
• Jadallah, C.C., & Ballard, H.L. (2021). Social learning in conservation and natural resource management: taking a sociocultural perspective. Ecology and Society 26(4):37. https://doi.org/10.5751/ES-12654-260437
• Kaiser, F., Wolfing, S. & Fuhrer, U. (1999). Environmental attitude and ecological behavior. Journal of Environmental Psychology, 19: 1-19.
• Kellert, S.R. (1985). Attitudes toward animals; age-related development among children. The Journal of Environmental Education, 16(3), 29-39.
• Kissinger, M., Sussman, C., Moore, J. & Rees, W.E. (2013). Accounting for the Ecological Footprint of Materials in Consumer Goods at the Urban Scale. Sustainability 5, 1960-1973; doi:10.3390/su5051960.
• Kuhlemeier, H., Bergh, H. & Lagerweij, N. (1999). Environmental Knowledge, Attitudes, and Behavior in Dutch Secondary Education. The Journal of Environmental Education. 30 (2): 4-14.
• Leite, L. & Dourado, L. (2015). Educação ambiental e para o desenvolvimento sustentável na formação de graduados em educação. In: Revista Comunicações, Piracicaba (SP), v. 22, n. 1, p. 285-307.
• Leslie, H.A., van Velzen M.J.M., Brandsma, S.H., Vethaak, D., Garcia-Vallejo, J.J., & Lamoree, M.H. (2022). Discovery and quantification of plastic particle pollution in human blood. Environment International, in press. https://doi.org/10.1016/j.envint.2022.107199
• Liang, A-W., Fang W-T., Yeh S-C., Liu S-Y., Tsai H-M., Chou, J-Y. & Eric Ng, E. (2018). A Nationwide Survey Evaluating the Environmental Literacy of Undergraduate Students in Taiwan. Sustainability, 10, 1730; doi:10.3390/su10061730.
• Lumsden, S. (2018). Ecological Crisis and the Problem of How to Inhabit a Norm. Ethics and the Environment, 23(1), 29-48. doi:10.2979/ethicsenviro.23.1.03.
• Lyons, E. & Breakwell, G.M. (1994). Factor predicting environmental concern and indifference in 13- to 16-years-old. Environment and Behavior, 26(2), 223-238.
• McBeth, W. & Volk, T.L. (2010). The national environmental literacy project: A baseline study of middle grade students in United States. The Journal of Environmental Education, 41(1): 55-67.
• McDonald, F. (2014) Developing an Integrated Conceptual Framework of Pro-Environmental Behavior in the Workplace through Synthesis of the Current Literature. Administrative Sciences, 4 (3), pp. 276-303.
• Otto, D., Caeiro, S., Nicolau, P., Disterheft, A., Teixeira, A., Becker, S., Bollmann, A. & Sander, K. (2019). Can MOOCs empower people to critically think about climate change? A learning outcome based comparison of two MOOCs. Journal of Cleaner Production, Volume 222, 10: 12-21.
• Pabortsava, K. & Lampitt, R.S. (2020). High concentrations of plastic hidden beneath the surface of the Atlantic Ocean. Nature Communications volume 11, Article number: 4073.
• Pallant, J. (2007). SPSS survival manual: A step by step guide to data analysis SPSS for windows third edition. Open University Press. New York, NY.
• Pe'er, S., Goldman, D. & Yavetz, B. (2007). Environmental Literacy in Teacher Training: Attitudes, Knowledge, and Environmental Behavior of Beginning Students. The Journal of Environmental Education, 39(1): 45-59.
• Schäufele, I. & Janssen, M. (2021). How and Why Does the Attitude-Behavior Gap Differ Between Product Categories of Sustainable Food? Analysis of Organic Food Purchases Based on Household Panel Data. Frontiers in Psychology 12:595636. doi: 10.3389/fpsyg.2021.595636.
• Schmidt, L., Guerra, J. & Nave, J. G. (2010). The role of non-scholar organizations in environmental education: A case study from Portugal. International Journal of Environment and Sustainable Development, 9 (1/2/3): 16–29.
• Schmidt, L., Nave, J.G., O'Riordan, T. & Guerra, J. (2011). Trends and Dilemmas Facing Environmental Education in Portugal: From Environmental Problem Assessment to Citizenship Involvement. Journal of Environmental Policy & Planning Vol. 13, No.2: 159–177.
• Shin, D., Chu, H., Lee, E., Ko, H., Lee, M., Kang, K., Min, B., & Park, J. (2005). An assessment of Korean students’ environmental literacy. Journal of Korean Earth Science Society, 26(4), 358-364.
• Spínola, H. (2012). Sustainable Development Contributions among University of Madeira (Portugal) Students. World Academy of Science Engineering and Technology, 66: 890- 895.
• Spínola, H. (2014). Forty years of environmental education in the Portuguese Democracy. The Online Journal of New Horizons in Education, 4 (3): 47-55. http://hdl.handle.net/10400.13/1363
• Spínola, H. (2015). Environmental literacy comparison between students taught in Eco-schools and ordinary schools in Madeira Island region of Portugal. Science Education International, 26 (3): 392-413.
• Spínola, H. (2016). Environmental Literacy in Madeira Island (Portugal): The Influence of Demographic Variables. International Electronic Journal of Environmental Education, 6(2): 92-107. http://hdl.handle.net/10400.13/1358.
• Spínola, H. (2020). Correlations between environmental literacy components (knowledge, attitude and behavior) in Madeira Island (Portugal) 9th grade students. The Online Journal of New Horizons in Education, 10 (1): 28-36. https://www.tojned.net/journals/tojned/articles/v10i01/v10i01-03.pdf
• Stern, P. (2000). Toward a coherent theory of environmentally significant behavior. The Journal of Social Issues, 56 (3): 407.
• Tarfaoui, D. & Zkim, S. (2017). Ecological Attitude- Behavior Gap: A Theoretical Analysis. International Journal of Economics & Strategic Management of Business Process (ESMB) Vol.8, Issue 1, pp. 33-38
• Tikka, P.M., Kuitunen, M.T., & Tynys, S.M. (2000). Effects of educational background on students’ attitudes, activity levels and knowledge concerning the environment. The Journal of Environmental Education, 31(3), 12-19.
• Timur, S., Timur, B. & Karakas A. (2014). Investigating Pre-service Teachers’ Knowledge and Behaviors toward Environment. Anthropologist, 17(1): 25-35.
• Tracana, R.B., Ferreira, E. & Carvalho, G. (2012). Environmental Education in Portuguese School Programmes andmTextbooks in Two Periods: 1991-2000 and 2001-2006. The Online Journal Of New Horizons In Education, Vol. 2, Issue 1: 57-67.
• Wilson, D.C. & Velis, C.A. (2015). Waste management—still a global challenge in the 21st century: an evidence-based call for action Waste Manage. Res. 33 1049–1051.