APA (7th ed.) Citation

Krueger, E. T. 1., & Reckless, W. C. (1931). Social psychology. Longmans.

Chicago Style (17th ed.) Citation

Krueger, Ernest Theodor 1883, and Walter Cade Reckless. Social Psychology. New York, London [etc]: Longmans, 1931.

MLA (9th ed.) Citation

Krueger, Ernest Theodor 1883, and Walter Cade Reckless. Social Psychology. Longmans, 1931.