APA (7th ed.) Citation

Humphrey, G. (1963). Thinking: An introd. to its experimental psychology. Wiley.

Chicago Style (17th ed.) Citation

Humphrey, George. Thinking: An Introd. to Its Experimental Psychology. New York: Wiley, 1963.

MLA (9th ed.) Citation

Humphrey, George. Thinking: An Introd. to Its Experimental Psychology. Wiley, 1963.