APA (7th ed.) Citation

Roberts, J. M., & Westad, O. A. (2007). The new Penguin history of the world (5th ed.). Penguin Books.

Chicago Style (17th ed.) Citation

Roberts, J. M., and Odd Arne Westad. The New Penguin History of the World. 5th ed. London: Penguin Books, 2007.

MLA (9th ed.) Citation

Roberts, J. M., and Odd Arne Westad. The New Penguin History of the World. 5th ed. Penguin Books, 2007.