APA (7th ed.) Citation

Landau, H. (1937). The enemy within: The inside story of German sabotage in America. G.P. Putnam's sons.

Chicago Style (17th ed.) Citation

Landau, Henry. The Enemy Within: The Inside Story of German Sabotage in America. [New York]: G.P. Putnam's sons, 1937.

MLA (9th ed.) Citation

Landau, Henry. The Enemy Within: The Inside Story of German Sabotage in America. G.P. Putnam's sons, 1937.