APA (7th ed.) Citation

Strahler, A. N., & Strahler, A. H. (1989). Elements of physical geography (4. ed., 4. print.). Wiley.

Chicago Style (17th ed.) Citation

Strahler, Arthur Newell, and Alan H. Strahler. Elements of Physical Geography. 4. ed., 4. print. New York, NY u.a: Wiley, 1989.

MLA (9th ed.) Citation

Strahler, Arthur Newell, and Alan H. Strahler. Elements of Physical Geography. 4. ed., 4. print. Wiley, 1989.