___

Abbas, M., & Raja, U. (2015). Impact of psychological capital on innovative performance and job stress. Canadian Journal of Administrative Sciences/Revue Canadienne des Sciences de l'Administration, 32(2), 128-138.

Al Hila, A. A., & Al Shobaki, M. J. (2016). The Role Of Servant Leadership In Achieving Excellence Performance In Technical Colleges-Provinces Of Gaza Strip. International Journal of Management Research and Business Strategy, 6(1), 69-91.

Alessandri, G., Consiglio, C., Luthans, F., & Borgogni, L. (2018). Testing a dynamic model of the impact of psychological capital on work engagement and job performance. Career Development International, 23(1), 33-47.

Avey, J. B., Reichard, R. J., Luthans, F., & Mhatre, K. H. (2011). Meta‐analysis of the impact of positive psychological capital on employee attitudes, behaviors, and performance. Human resource development quarterly, 22(2), 127-152.

Bande, B., Fernández-Ferrín, P., Varela-Neira, C., & Otero-Neira, C. (2016). Exploring the relationship among servant leadership, intrinsic motivation and performance in an industrial sales setting. Journal of Business & Industrial Marketing, 31(2), 219-231.

Bandura A. (1997). Self-self efficacy: The exercise of control. New York: Freeman.

Bandura A. (1998). Personal and collective efficacy in human adaptation and change. In Adair JG, Belanger D, Dion KL (Eds.), Advances in psychological science, Vol. 1: Personal, social and cultural aspects (pp. 51–71). Hove, UK: Psychology Press.

Barroca, A., Neto, C., & Silveira, A. (2017). Servant leadership through arts–a state of the art. Review of Business and Legal Sciences/Revista de Ciências Empresariais e Jurídicas, (29), 181-193.

Baykal, E., & Zehir, C. (2018). Mediating effect of psychological capital on the relationship between spiritual leadership and performance. Economics and Management.

Baykal, E., Zehir, C., & Kole, M. (2018). Effects of Servant Leadership on Gratitude, Empowerment, Innovativeness and Performance: Turkey Example. Journal of Economy Culture and Society, 57, 29-52.

Boyatzis, R. E., Smith, M. L., & Blaize, N. (2006). Developing sustainable leaders through coaching and compassion. Academy of Management Learning & Education, 5, 8–24.

Carmona–Halty, M., Salanova, M., Llorens, S., & Schaufeli, W. B. (2018). How Psychological Capital Mediates Between Study–Related Positive Emotions and Academic Performance. Journal of Happiness Studies, 1-13.

George, W. (2003). Authentic leadership: Rediscovering the secrets to creating lasting value. San Francisco: Jossey-Bass.

Greenleaf, R. K. (2002). Servant leadership: A journey into the nature of legitimate power and greatness. New York: Paulist Press.

Greenleaf, R. K. 1970. The servant as leader. Indianapolis: Robert K. Greenleaf Center.

Hanse, J. J., Harlin, U., Jarebrant, C., Ulin, K., & Winkel, J. (2016). The impact of servant leadership dimensions on leader–member exchange among health care professionals. Journal of nursing management, 24(2), 228-234.

Harju, L. K., Schaufeli, W. B., & Hakanen, J. J. (2018). A multilevel study on servant leadership, job boredom and job crafting. Journal of Managerial Psychology, 33(1), 2-14.

Hoch, J. E., Bommer, W. H., Dulebohn, J. H., & Wu, D. (2018). Do ethical, authentic, and servant leadership explain variance above and beyond transformational leadership? A meta-analysis. Journal of Management, 44(2), 501-529.

Hsiao, C., Lee, Y. H., & Chen, W. J. (2015). The effect of servant leadership on customer value co-creation: A cross-level analysis of key mediating roles. Tourism Management, 49, 45-57.

Huang, J., Li, W., Qiu, C., Yim, F. H. K., & Wan, J. (2016). The impact of CEO servant leadership on firm performance in the hospitality industry. International Journal of Contemporary Hospitality Management, 28(5), 945-968.

Hur, W. M., Rhee, S. Y., & Ahn, K. H. (2016). Positive psychological capital and emotional labor in Korea: the job demands-resources approach. The International Journal of Human Resource Management, 27(5), 477-500.

Kouzes, J.M. and Posner, B.Z. (1993), Credibility: How Leaders Gain and Lose It, Why People Demand It, JosseyBass Publishers,San Francisco, CA.

Lapointe, É., & Vandenberghe, C. (2018). Examination of the relationships between servant leadership, organizational commitment, and voice and antisocial behaviors. Journal of Business Ethics, 148(1), 99-115.

Larson, M., & Luthans, F. (2006). Potential added value of psychological capital in predicting work attitudes. Journal of leadership & organizational studies, 13(2), 75-92.

Li, Y., Wang, Z., Yang, L. Q., & Liu, S. (2016). The crossover of psychological distress from leaders to subordinates in teams: The role of abusive supervision, psychological capital, and team performance. Journal of Occupational Health Psychology, 21(2), 142.

Liden, R. C., Wayne, S. J., Liao, C., & Meuser, J. D. (2014). Servant leadership and serving culture: Influence on individual and unit performance. Academy of Management Journal, 57(5), 1434-1452.

Liden, R. C., Wayne, S. J., Meuser, J. D., Hu, J., Wu, J., & Liao, C. (2015). Servant leadership: Validation of a short form of the SL-28. The Leadership Quarterly, 26(2), 254-269.

Luthans F, Avolio B, Walumbwa F, Li W. (2005). The psychological capital of Chinese workers: Exploring the relationship with performance. Management and Organiza- tion Review, 1, 247–269.

Luthans F. (2002a). The need for and meaning of positive organizational behavior. Journal of Organizational Behavior, 23, 695–706.

Luthans F. (2002b). Positive organizational behavior: Developing and managing psychological strengths. Academy of Management Executive, 16, 57–72.

Luthans, F., & Jensen, S. M. (2002). Hope: A new positive strength for human resource development. Human resource development review, 1(3), 304-322.

Luthans, F., & Youssef-Morgan, C. M. (2017). Psychological capital: An evidence-based positive approach. Annual Review of Organizational Psychology and Organizational Behavior, 4, 339-366.

Luthans, F., & Youssef, C.M. (2007). Emerging positive organiza- tional behavior. Journal of Management, 33(3), 321–349.

Luthans, F., Avolio, B. J., Avey, J. B., & Norman, S. M. (2007). Positive psychological capital: Measurement and relationship with performance and satisfaction. Personnel psychology, 60(3), 541-572.

Luthans, F., Norman, S. M., Avolio, B. J., & Avey, J. B. (2008). The mediating role of psychological capital in the supportive organizational climate—employee performance relationship. Journal of Organizational Behavior: The International Journal of Industrial, Occupational and Organizational Psychology and Behavior, 29(2), 219-238.

Luthans, F., Norman, S. M., Avolio, B. J., & Avey, J. B. (2008). The mediating role of psychological capital in the supportive organizational climate—employee performance relationship. Journal of Organizational Behavior: The International Journal of Industrial, Occupational and Organizational Psychology and Behavior, 29(2), 219-238.

Luthans, F., Youssef, C.M., & Avolio, B.J. (2007). Psychological capital. New York, NY: Oxford University Press.

Masten AS. (2001). Ordinary magic: Resilience processes in development. American Psychologist, 56, 227–239.

Mathe, K., Scott-Halsell, S., Kim, S., & Krawczyk, M. (2017). Psychological capital in the quick service restaurant industry: a study of unit-level performance. Journal of Hospitality & Tourism Research, 41(7), 823-845.

McMurray, A. J., Pirola-Merlo, A., Sarros, J. C., & Islam, M. M. (2010). Leadership, climate, psychological capital, commitment, and wellbeing in a non-profit organization. Leadership & Organization Development Journal, 31(5), 436-457.

McQuiston, D. H. (2018). Blending Customer-Orientated Sales, Servant Leadership, and Biblical Principles of Servanthood into a New Sales Framework: The Serving Salesperson. Christian Business Academy Review (CBAR), 13.

Meneghel, I., Salanova, M., & Martínez, I. M. (2016). Feeling good makes us stronger: How team resilience mediates the effect of positive emotions on team performance. Journal of Happiness Studies, 17(1), 239-255.

Ortega-Maldonado, A., & Salanova, M. (2018). Psychological capital and performance among undergraduate students: the role of meaning-focused coping and satisfaction. Teaching in Higher Education, 23(3), 390-402.

Ozturk, A., & Karatepe, O. M. (2018). Frontline hotel employees’ psychological capital, trust in organization, and their effects on nonattendance intentions, absenteeism, and creative performance. Journal of Hospitality Marketing & Management, 1-23.

Panaccio, A., Henderson, D. J., Liden, R. C., Wayne, S. J., & Cao, X. (2015). Toward an understanding of when and why servant leadership accounts for employee extra-role behaviors. Journal of Business and Psychology, 30(4), 657-675.

Parris, D.L., & Peachey, J.W. (2013) A systematic literature review of servant leadership theory in organizational contexts. Journal of Business Ethics, 113, 377-393.

Patterson, K. (2010). Servant leadership and love. In D. van Dierendonck & K. Patterson (Eds.), Servant leadership, devel- opments in theory and research (pp. 67–76). Hampshire, UK: Palgrave Macmillan.

Peterson, S. J., Luthans, F., Avolio, B. J., Walumbwa, F. O., & Zhang, Z. (2011). Psychological capital and employee performance: A latent growth modeling approach. Personnel Psychology, 64(2), 427-450.

Reinke, S. J. (2004). Service before self: Towards a theory of servant-leadership. Global Virtue Ethics Review, 5(3), 30-57.

Russell, R. F. (2001). The role of values in servant leadership. Leadership & Organization Development Journal, 22(2), 76-84.

Russell, R. F., & Gregory Stone, A. (2002). A review of servant leadership attributes: Developing a practical model. Leadership & Organization Development Journal, 23(3), 145-157.

Ryan, K.D. and Oestreich, D.K. 1998), Driving Fear out of the Workplace: Creating the High- trust, High-performance Organization, Jossey- Bass, San Francisco, CA.

Seligman MEP, Steen TA, Park N, Peterson C. (2005). Positive psychology progress: Empirical validation of interventions. American Psychologist, 60, 410–421.

Sheldon K, King L. (2001). Why positive psychology is necessary. American Psychologist, 56(3), 216–217.

Snyder CR. (2000). Handbook of hope. San Diego: Academic Press.

Snyder CR. (2002). Hope theory: Rainbows in the mind. Psychological Inquiry, 13(4), 249–276.

Snyder, C. R. (Ed.). (1997). Hope for the journey: Helping children through good times and bad. Basic Books (AZ).

Song, C., Park, K. R., & Kang, S. W. (2015). Servant leadership and team performance: The mediating role of knowledge-sharing climate. Social Behavior and Personality: an international journal, 43(10), 1749-1760.

Van Dierendonck, D., & Patterson, K. (2015). Compassionate love as a cornerstone of servant leadership: An integration of previous theorizing and research. Journal of Business Ethics, 128(1), 119-131.

Walumbwa, F. O., Luthans, F., Avey, J. B., & Oke, A. (2011). Authentically leading groups: The mediating role of collective psychological capital and trust. Journal of Organizational Behavior, 32(1), 4-24.

Wang, H., Sui, Y., Luthans, F., Wang, D., & Wu, Y. (2014). Impact of authentic leadership on performance: Role of followers' positive psychological capital and relational processes. Journal of Organizational Behavior, 35(1), 5-21.

Wong, P. T., & Page, D. (2003). Servant leadership: An opponent-process model and the revised servant leadership profile. In Proceedings of the Servant Leadership Research Roundtable.