Cita APA (7th ed.)

International Baccalaureate Organization & Cannon, M. (2009). 20th century world history: Course companion. Oxford University Press.

Cita Chicago (17th ed.)

International Baccalaureate Organization i Martin Cannon. 20th Century World History: Course Companion. Oxford, New York: Oxford University Press, 2009.

Cita MLA (9th ed.)

International Baccalaureate Organization i Martin Cannon. 20th Century World History: Course Companion. Oxford University Press, 2009.