APA (7th ed.) Citation

Gagné, E. D., Yekovich, C. W., & Yekovich, F. R. (1993). The cognitive psychology of school learning (2nd ed.). Longman.

Chicago Style (17th ed.) Citation

Gagné, Ellen D., Carol Walker Yekovich, and Frank R. Yekovich. The Cognitive Psychology of School Learning. 2nd ed. New York: Longman, 1993.

MLA (9th ed.) Citation

Gagné, Ellen D., et al. The Cognitive Psychology of School Learning. 2nd ed. Longman, 1993.