APA (7th ed.) Citation

McDougall, W. (1927). The group mind: A sketch of the principles of collective psychology ([2nd ed.].). University Press.

Chicago Style (17th ed.) Citation

McDougall, William. The Group Mind: A Sketch of the Principles of Collective Psychology. [2nd ed.]. Cambridge: University Press, 1927.

MLA (9th ed.) Citation

McDougall, William. The Group Mind: A Sketch of the Principles of Collective Psychology. [2nd ed.]. University Press, 1927.