APA (7th ed.) Zitazioa

Ramsey, W. L. (1969). Modern earth science. Rinehart and Winston.

Chicago Style (17th ed.) Zitazioa

Ramsey, William L. Modern Earth Science. New York: Rinehart and Winston, 1969.

MLA (9th ed.) Zitazioa

Ramsey, William L. Modern Earth Science. Rinehart and Winston, 1969.