Gagne, R. M., Briggs, L. J., & Wager, W. W. (1988). Principles of instructional design (3rd ed.). Holt, Rinehart and Winston.
Lua i Stíl Chicago (17ú heag.)Gagne, Robert Mills, Leslie J. Briggs, agus Walter W. Wager. Principles of Instructional Design. 3rd ed. Fort Worth: Holt, Rinehart and Winston, 1988.
Lua MLA (9ú heag.)Gagne, Robert Mills, et al. Principles of Instructional Design. 3rd ed. Holt, Rinehart and Winston, 1988.
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