APA (7th ed.) Citation

Pillsbury, W. B. (1930). The essentials of psychology. Macmillan.

Chicago Style (17th ed.) Citation

Pillsbury, Walter Brown. The Essentials of Psychology. New York: Macmillan, 1930.

MLA (9th ed.) Citation

Pillsbury, Walter Brown. The Essentials of Psychology. Macmillan, 1930.