APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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