APA (7th ed.) Citation

Humphrey, G. (1963). Thinking: An introduction to its experimental psychology. John Wiley & Sons.

Chicago Style (17th ed.) Citation

Humphrey, George. Thinking: An Introduction to Its Experimental Psychology. New York: John Wiley & Sons, 1963.

MLA (9th ed.) Citation

Humphrey, George. Thinking: An Introduction to Its Experimental Psychology. John Wiley & Sons, 1963.