APA (7th ed.) Citation

Peterson, H. A., Marzolf, S. S., & Bayley, N. (1948). Educational psychology. Macmillan Co..

Chicago Style (17th ed.) Citation

Peterson, Harvey Andrew, Stanley S. Marzolf, and Nancy Bayley. Educational Psychology. New York: Macmillan Co., 1948.

MLA (8th ed.) Citation

Peterson, Harvey Andrew, et al. Educational Psychology. Macmillan Co., 1948.