Cita APA (7a ed.)

Strahler, A. N. (1981). Physical geology. Harper & Row Publishers.

Cita Chicago Style (17a ed.)

Strahler, Arthur N. Physical Geology. New York: Harper & Row Publishers, 1981.

Cita MLA (9a ed.)

Strahler, Arthur N. Physical Geology. Harper & Row Publishers, 1981.