APA (7th ed.) Citation

Weigert, H. W. (1942). Generals and geographers: The twilight of geopolitics. Oxford university press.

Chicago Style (17th ed.) Citation

Weigert, Hans Werner. Generals and Geographers: The Twilight of Geopolitics. New York, London [etc.]: Oxford university press, 1942.

MLA (9th ed.) Citation

Weigert, Hans Werner. Generals and Geographers: The Twilight of Geopolitics. Oxford university press, 1942.