APA (7th ed.) Citation

Carrington, R. (1958). A Guide To Earth History. Penguin Books.

Chicago Style (17th ed.) Citation

Carrington, Richard. A Guide To Earth History. Penguin Books, 1958.

MLA (8th ed.) Citation

Carrington, Richard. A Guide To Earth History. Penguin Books, 1958.

Warning: These citations may not always be 100% accurate.