Gaya APA

Gagne, R, M., J., I, B, L. (NULL). Principles of instructional design . New: New York: Holt, Rinehart and Winston; 1978.

Gaya MLA

Gagne, Robert, M.., J., I., Briggs,, Leslie. "Principles of instructional design". New: New York: Holt, Rinehart and Winston; 1978, NULL. Text.