Cita APA (7a ed.)

Kelly, N., & Brooks-Tyreman, A. (1999). The modern world (1. publ.). Heinemann.

Cita Chicago Style (17a ed.)

Kelly, Nigel, y Alan Brooks-Tyreman. The Modern World. 1. publ. Oxford [u.a.]: Heinemann, 1999.

Cita MLA (9a ed.)

Kelly, Nigel, y Alan Brooks-Tyreman. The Modern World. 1. publ. Heinemann, 1999.