APA (7th ed.) Citation

McDougall, W. (1918). An introduction to social psychology (13th ed.). J.W. Luce & co..

Chicago Style (17th ed.) Citation

McDougall, William. An Introduction to Social Psychology. 13th ed. Boston: J.W. Luce & co., 1918.

MLA (8th ed.) Citation

McDougall, William. An Introduction to Social Psychology. 13th ed. J.W. Luce & co., 1918.