Παραπομπή APA

Gagne, R. M., & Briggs , L. (1979). Principles of instructional desing (2nd ed.). Holt,Rinehart and Winston.

Παραπομπή Chicago Style

Gagne, Robert M., και Lesliej Briggs. Principles of Instructional Desing. 2nd ed. New York: Holt,Rinehart and Winston, 1979.

Παραπομπή MLA

Gagne, Robert M., και Lesliej Briggs. Principles of Instructional Desing. 2nd ed. Holt,Rinehart and Winston, 1979.