APA (7th ed.) Citation

Gates, A. I. (1928). Elementary psychology: By Arthur I. Gates (Rev. ed.). Macmillan.

Chicago Style (17th ed.) Citation

Gates, Arthur I. Elementary Psychology: By Arthur I. Gates. Rev. ed. New York: Macmillan, 1928.

MLA (8th ed.) Citation

Gates, Arthur I. Elementary Psychology: By Arthur I. Gates. Rev. ed. Macmillan, 1928.