Cita APA (7a ed.)

Wrenn, A., & McAleavy, T. (1997). The First World War (1. publ.). Cambridge Univ. Press.

Cita Chicago Style (17a ed.)

Wrenn, Andrew, y Tony McAleavy. The First World War. 1. publ. Cambridge [u.a.]: Cambridge Univ. Press, 1997.

Cita MLA (9a ed.)

Wrenn, Andrew, y Tony McAleavy. The First World War. 1. publ. Cambridge Univ. Press, 1997.