APA (7e ed.) Bronvermelding

Putnam, W. C. (1964). Geology. Oxford University Press.

Chicago (17e ed.) Bronvermelding

Putnam, William Clement. Geology. New York: Oxford University Press, 1964.

MLA (9e ed.) Bronvermelding

Putnam, William Clement. Geology. Oxford University Press, 1964.