Cita APA (7a ed.)

Davey, L. A., & Speed, P. F. (1985). Twentieth century world history (1. publ.). Wheaton.

Cita Chicago Style (17a ed.)

Davey, L. A., y P. F. Speed. Twentieth Century World History. 1. publ. Leeds: Wheaton, 1985.

Cita MLA (9a ed.)

Davey, L. A., y P. F. Speed. Twentieth Century World History. 1. publ. Wheaton, 1985.