APA-referens (7:e uppl.)

Strahler, A. N. (1976). Principles of earth science. Harper & Row.

Chicago-referens (17:e uppl.)

Strahler, Arthur Newell. Principles of Earth Science. New York: Harper & Row, 1976.

MLA-referens (9:e uppl.)

Strahler, Arthur Newell. Principles of Earth Science. Harper & Row, 1976.