APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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