APA (7th ed.) Citation

Davids, A., & Engen, T. (1975). Introductory psychology (1. ed.). Random House.

Chicago Style (17th ed.) Citation

Davids, Anthony, and Trygg Engen. Introductory Psychology. 1. ed. New York: Random House, 1975.

MLA (9th ed.) Citation

Davids, Anthony, and Trygg Engen. Introductory Psychology. 1. ed. Random House, 1975.