APA (7th ed.) Citation

Guthrie, E. R., & Edwards, A. L. (1949). Psychology: A first course in human behavior. Harper.

Chicago Style (17th ed.) Citation

Guthrie, Edwin Ray, and Allen Louis Edwards. Psychology: A First Course in Human Behavior. New York: Harper, 1949.

MLA (9th ed.) Citation

Guthrie, Edwin Ray, and Allen Louis Edwards. Psychology: A First Course in Human Behavior. Harper, 1949.