APA (7th ed.) Citation

Watson, G., & Spence, R. B. (1930). Educational problems for psychological study. Macmillan.

Chicago Style (17th ed.) Citation

Watson, Goodwin, and Ralph Beckett Spence. Educational Problems for Psychological Study. New York: Macmillan, 1930.

MLA (9th ed.) Citation

Watson, Goodwin, and Ralph Beckett Spence. Educational Problems for Psychological Study. Macmillan, 1930.