APA (7th ed.) Citation

Keates, J. S. (1956). The Penguin atlas of the world. Penguin Books.

Chicago Style (17th ed.) Citation

Keates, J. S. The Penguin Atlas of the World. Harmondsworth, Middlesex: Penguin Books, 1956.

MLA (9th ed.) Citation

Keates, J. S. The Penguin Atlas of the World. Penguin Books, 1956.