Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

Strahler, Arthur Newell. Principles of Earth Science. New York: Harper & Row, 1976.

Cita MLA (9th ed.)

Strahler, Arthur Newell. Principles of Earth Science. Harper & Row, 1976.