APA (7th ed.) Citation

Clausewitz, K. v., & Rapoport, A. (1968). On war. Penguin Books.

Chicago Style (17th ed.) Citation

Clausewitz, Karl von, and Anatole Rapoport. On War. Baltimore: Penguin Books, 1968.

MLA (9th ed.) Citation

Clausewitz, Karl von, and Anatole Rapoport. On War. Penguin Books, 1968.