Cita APA (7a ed.)

Kelly, N., & Whittock, M. (1993). The era of the Second World War (1. ed.). Heinemann.

Cita Chicago Style (17a ed.)

Kelly, Nigel, y Martyn Whittock. The Era of the Second World War. 1. ed. Oxford [u.a.]: Heinemann, 1993.

Cita MLA (9a ed.)

Kelly, Nigel, y Martyn Whittock. The Era of the Second World War. 1. ed. Heinemann, 1993.