Kemp, J. E., & Smellie, D. C. (1989). Planning, producing, and using instructional media (6th ed.). Harper & Row.
Cita Chicago (17th ed.)Kemp, Jerrold E., i Don C. Smellie. Planning, Producing, and Using Instructional Media. 6th ed. New York: Harper & Row, 1989.
Cita MLA (8th ed.)Kemp, Jerrold E., i Don C. Smellie. Planning, Producing, and Using Instructional Media. 6th ed. Harper & Row, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.