APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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