APA (7th ed.) Citation

Rohwer, J., & Hummelchen, G. (1972). Chronology of the war at sea, 1939-1945. Arco Pub.

Chicago Style (17th ed.) Citation

Rohwer, Jurgen, and Gerhard Hummelchen. Chronology of the War at Sea, 1939-1945. New York: Arco Pub, 1972.

MLA (9th ed.) Citation

Rohwer, Jurgen, and Gerhard Hummelchen. Chronology of the War at Sea, 1939-1945. Arco Pub, 1972.