APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Northrop, Douglas Taylor. A Companion to World History. Hoboken, New Jersey: Wiley-Blackwell, 2012.

MLA (9th ed.) Citation

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