Cita APA (7th ed.)

BUTZER, K. W. (1976). Geomorphology from the earth. Harper and Row.

Cita Chicago (17th ed.)

BUTZER, Karl W. Geomorphology from the Earth. New York: Harper and Row, 1976.

Cita MLA (9th ed.)

BUTZER, Karl W. Geomorphology from the Earth. Harper and Row, 1976.