APA (7th ed.) Citation

Pitkin, W. B. (1929). The psychology of happiness. Simon and Schuster.

Chicago Style (17th ed.) Citation

Pitkin, Walter B. The Psychology of Happiness. New York: Simon and Schuster, 1929.

MLA (8th ed.) Citation

Pitkin, Walter B. The Psychology of Happiness. Simon and Schuster, 1929.