APA

Strahler A. N., Strahler A. H., . (1989). Elements of physical geography. New York [u.a.]: Wiley.

Chicago

Strahler Arthur Newell, Strahler Alan H, . 1989. Elements of physical geography. New York [u.a.]: Wiley.

Harvard

Strahler A. N., Strahler A. H., . (1989). Elements of physical geography. New York [u.a.]: Wiley.

MLA

Strahler Arthur Newell, Strahler Alan H, . Elements of physical geography. New York [u.a.]: Wiley. 1989.