Cita APA

Thornbury, W. D. (1969). Principles of geomorphology (2. ed.). New York: J. Wiley & Sons.

Citación estilo Chicago

Thornbury, William D. Principles of Geomorphology. 2. ed. New York: J. Wiley & Sons, 1969.

Cita MLA

Thornbury, William D. Principles of Geomorphology. 2. ed. New York: J. Wiley & Sons, 1969.