Cita APA (7a ed.)

Strahler, A. N. (1973). Introduction to physical geography (3rd.ed.). Wiley.

Cita Chicago Style (17a ed.)

Strahler, Arthur Newell. Introduction to Physical Geography. 3rd.ed. Nueva York: Wiley, 1973.

Cita MLA (8a ed.)

Strahler, Arthur Newell. Introduction to Physical Geography. 3rd.ed. Wiley, 1973.