APA-referens (7:e uppl.)

Prothero, D. R. (2004). Evolution of the earth (Seventh edition.). McGraw-Hill.

Chicago-referens (17:e uppl.)

Prothero, Donald R. Evolution of the Earth. Seventh edition. New York: McGraw-Hill, 2004.

MLA-referens (9:e uppl.)

Prothero, Donald R. Evolution of the Earth. Seventh edition. McGraw-Hill, 2004.