Cita APA (7th ed.)

Strahler, A. H. (2013). Introducing physical geography (6a. ed.). Wiley.

Cita Chicago (17th ed.)

Strahler, Alan H. Introducing Physical Geography. 6a. ed. New Brunswick: Wiley, 2013.

Cita MLA (9th ed.)

Strahler, Alan H. Introducing Physical Geography. 6a. ed. Wiley, 2013.