APA (7th ed.) Citation

Renn, L. (1971). Warfare: The relation of war to society (1939 Repr.). Books for Libraries Press.

Chicago Style (17th ed.) Citation

Renn, Ludwig. Warfare: The Relation of War to Society. 1939 Repr. Freeport, NY: Books for Libraries Press, 1971.

MLA (9th ed.) Citation

Renn, Ludwig. Warfare: The Relation of War to Society. 1939 Repr. Books for Libraries Press, 1971.

Warning: These citations may not always be 100% accurate.