Cita APA (7th ed.)

Oxford University Press & Hall, P. G. (1974). The Penguin world atlas. Penguin.

Cita Chicago (17th ed.)

Oxford University Press i Peter Geoffrey Hall. The Penguin World Atlas. Harmondsworth: Penguin, 1974.

Cita MLA (9th ed.)

Oxford University Press i Peter Geoffrey Hall. The Penguin World Atlas. Penguin, 1974.