APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Gagné, Ellen D., Carol W. Yekovich, and Frank R. Yekovich. The Cognitive Psychology of School Learning. 2. ed. New York, NY: HarperCollins, 1993.

MLA (9th ed.) Citation

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