APA (7th ed.) Citation

Engle, T. L., & Snellgrove, L. (1974). Psychology, its principles and applications (6th ed.). Harcourt Brace Jovanovich.

Chicago Style (17th ed.) Citation

Engle, T. L., and Louis Snellgrove. Psychology, Its Principles and Applications. 6th ed. New York: Harcourt Brace Jovanovich, 1974.

MLA (9th ed.) Citation

Engle, T. L., and Louis Snellgrove. Psychology, Its Principles and Applications. 6th ed. Harcourt Brace Jovanovich, 1974.