Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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