APA (7th ed.) Citation

Northrop, D. (2012). A companion to world history. Wiley-Blackwell.

Chicago Style (17th ed.) Citation

Northrop, Douglas. A Companion to World History. Malden, MA ; Oxford ; Chichester: Wiley-Blackwell, 2012.

MLA (9th ed.) Citation

Northrop, Douglas. A Companion to World History. Wiley-Blackwell, 2012.