APA (7th ed.) Citation

Dury, G. H. (1971). The face of the earth (3rd ed.). Penguin Books.

Chicago Style (17th ed.) Citation

Dury, G. H. The Face of the Earth. 3rd ed. Harmondsworth: Penguin Books, 1971.

MLA (9th ed.) Citation

Dury, G. H. The Face of the Earth. 3rd ed. Penguin Books, 1971.