APA (7th ed.) Citation

Johnston, G. H. (1943). The toughest fighting in the world. Duell, Sloan and Pearce.

Chicago Style (17th ed.) Citation

Johnston, George Henry. The Toughest Fighting in the World. New York: Duell, Sloan and Pearce, 1943.

MLA (9th ed.) Citation

Johnston, George Henry. The Toughest Fighting in the World. Duell, Sloan and Pearce, 1943.