Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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