APA-referens (7:e uppl.)

Stanley, S. M. (1989). Earth and life through time (2nd ed.). W.H. Freeman.

Chicago-referens (17:e uppl.)

Stanley, Steven M. Earth and Life Through Time. 2nd ed. New York: W.H. Freeman, 1989.

MLA-referens (9:e uppl.)

Stanley, Steven M. Earth and Life Through Time. 2nd ed. W.H. Freeman, 1989.