Cita APA (7a ed.)

Culpin, C., & Dawson, I. (2004). The Twentieth Century: A world study since 1900 (1. publ.). Murray.

Cita Chicago Style (17a ed.)

Culpin, Christopher, y Ian Dawson. The Twentieth Century: A World Study Since 1900. 1. publ. London: Murray, 2004.

Cita MLA (9a ed.)

Culpin, Christopher, y Ian Dawson. The Twentieth Century: A World Study Since 1900. 1. publ. Murray, 2004.