Cita APA (7a ed.)

Cannon, M., Jones-Nerzic, R., & Keys, D. (2009). 20th century world history: Course companion ; IB diploma programme (1. publ.). Oxford Univ. Press.

Cita Chicago Style (17a ed.)

Cannon, Martin, Richard Jones-Nerzic, y David Keys. 20th Century World History: Course Companion ; IB Diploma Programme. 1. publ. Oxford: Oxford Univ. Press, 2009.

Cita MLA (9a ed.)

Cannon, Martin, et al. 20th Century World History: Course Companion ; IB Diploma Programme. 1. publ. Oxford Univ. Press, 2009.