APA (7th ed.) Zitazioa

Gillaly, J. (1968). Principles of geology. W. H. Freeman.

Chicago Style (17th ed.) Zitazioa

Gillaly, James. Principles of Geology. San Francisco: W. H. Freeman, 1968.

MLA (9th ed.) Zitazioa

Gillaly, James. Principles of Geology. W. H. Freeman, 1968.