Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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