Cita APA (7th ed.)

Strahler, . A. N., & Strahler, A. H. (1976). Elements of physical geography. John Wiley.

Cita Chicago (17th ed.)

Strahler, Arthur Newell, i Alan H. Strahler. Elements of Physical Geography. New York: John Wiley, 1976.

Cita MLA (9th ed.)

Strahler, Arthur Newell, i Alan H. Strahler. Elements of Physical Geography. John Wiley, 1976.