APA (7th ed.) Citation

Roberts, J. M. (2004). The new penguin history of the world. Penguin.

Chicago Style (17th ed.) Citation

Roberts, J. M. The New Penguin History of the World. London: Penguin, 2004.

MLA (9th ed.) Citation

Roberts, J. M. The New Penguin History of the World. Penguin, 2004.

Warning: These citations may not always be 100% accurate.