APA (7th ed.) Citation

Bourne, J. M. (2001). Who's who in World War One. Routledge.

Chicago Style (17th ed.) Citation

Bourne, J. M. Who's Who in World War One. London ; New York: Routledge, 2001.

MLA (9th ed.) Citation

Bourne, J. M. Who's Who in World War One. Routledge, 2001.