APA aipamena

Eardley, A. J. (1965). General College Geology. New York: Harper & Row.

Chicago Style aipamena

Eardley, A. J. General College Geology. New York: Harper & Row, 1965.

MLA aipamena

Eardley, A. J. General College Geology. New York: Harper & Row, 1965.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.