Cita APA

Dunbar, C. O. (1960). Historical geology (2nd ed.). New York: Wiley.

Citación estilo Chicago

Dunbar, Carl O. Historical Geology. 2nd ed. New York: Wiley, 1960.

Cita MLA

Dunbar, Carl O. Historical Geology. 2nd ed. New York: Wiley, 1960.