APA (7th ed.) Citation

Halpern. (1994). A naval history of the World War I. Routledge.

Chicago Style (17th ed.) Citation

Halpern. A Naval History of the World War I. London: Routledge, 1994.

MLA (9th ed.) Citation

Halpern. A Naval History of the World War I. Routledge, 1994.

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