APA (7th ed.) Citation

Strausz-Hupe, R. (1942). Geopolitics: The struggle for space and power. G.P. Putnam's sons.

Chicago Style (17th ed.) Citation

Strausz-Hupe, Robert. Geopolitics: The Struggle for Space and Power. New York: G.P. Putnam's sons, 1942.

MLA (9th ed.) Citation

Strausz-Hupe, Robert. Geopolitics: The Struggle for Space and Power. G.P. Putnam's sons, 1942.