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• Campbell, D., & Stanley, J. (1963). Experimental and quasi-experimental designs for research. Boston: Houghton Mifflin.
• Clark, R. (1983). Reconsidering research on learning from media. Review of Educational Research, 53(4), 445-459.
• Finn, J. (1953). Professionalizing the audiovisual field. Audo-Visual Communication Review, 1(1), 6- 17.
• Smith, B., Benne, K., Stanley, W., & Anderson, A. (1951). Readings in the Social Aspects of Education. Danville, ILL.: Interstate Printers and Publishers.
• Correspondence: Michael Simonson, Professor, Instructional Technology and Distance Education,
• Fischler School of Education and Human Services, Nova Southeastern University, North Miami
• Beach, FL 33162, United States.