APA (7th ed.) Citation

Roberts, J. M. (1980). The Pelican history of the world (Rev. ed.). Penguin Books.

Chicago Style (17th ed.) Citation

Roberts, J. M. The Pelican History of the World. Rev. ed. Harmondsworth: Penguin Books, 1980.

MLA (9th ed.) Citation

Roberts, J. M. The Pelican History of the World. Rev. ed. Penguin Books, 1980.