APA ציטוט

Gagne, R. M. (1962). Psychological principles in system development. Holt Rinehart and wiston.

Chicago Edition Citation

Gagne, Robert M. Psychological Principles in System Development. New York: Holt Rinehart and wiston, 1962.

ציטוט MLA

Gagne, Robert M. Psychological Principles in System Development. Holt Rinehart and wiston, 1962.