Citazione Stile APA (7a Edizione)

McDougall, W. (1927). Janus: The conquest of war; a psychological inquiry. K. Paul, Trench, Trubner.

Citazione stile Chigago Style (17a edizione)

McDougall, William. Janus: The Conquest of War; a Psychological Inquiry. London: K. Paul, Trench, Trubner, 1927.

Citatione MLA (8a ed.)

McDougall, William. Janus: The Conquest of War; a Psychological Inquiry. K. Paul, Trench, Trubner, 1927.