Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Strahler, Arthur N., y Alan H. Strahler. Elements of Physical Geography. 3rd ed. New York: John Wiley & Sons, 1984.

Cita MLA (9a ed.)

Strahler, Arthur N., y Alan H. Strahler. Elements of Physical Geography. 3rd ed. John Wiley & Sons, 1984.