Cita APA (7th ed.)

Strahler, A. H., & Strahler, A. N. (2016). Introducing physical geography (6th ed.). John Wiley & Sons.

Cita Chicago (17th ed.)

Strahler, Alan H., i Arthur N. Strahler. Introducing Physical Geography. 6th ed. Hoboken, NJ: John Wiley & Sons, 2016.

Cita MLA (9th ed.)

Strahler, Alan H., i Arthur N. Strahler. Introducing Physical Geography. 6th ed. John Wiley & Sons, 2016.