APA (7th ed.) Zitazioa

STRAHLER, A. N. (1976). Principles of earth science. Harper & Row.

Chicago Style (17th ed.) Zitazioa

STRAHLER, Arthur N. Principles of Earth Science. New York: Harper & Row, 1976.

MLA (9th ed.) Zitazioa

STRAHLER, Arthur N. Principles of Earth Science. Harper & Row, 1976.