Cita APA (7th ed.)

Strahler, A. N. (1984). Elements of physical geography (3rd ed.). John Wiley and Sons.

Cita Chicago (17th ed.)

Strahler, Arthur N. Elements of Physical Geography. 3rd ed. New York: John Wiley and Sons, 1984.

Cita MLA (9th ed.)

Strahler, Arthur N. Elements of Physical Geography. 3rd ed. John Wiley and Sons, 1984.