Παραπομπή APA

Strahler, A. N. (1971). Earth sciences (2nd ed.). Harper&Row.

Παραπομπή Chicago Style

Strahler, Arthur N. Earth Sciences. 2nd ed. New York: Harper&Row, 1971.

Παραπομπή MLA

Strahler, Arthur N. Earth Sciences. 2nd ed. Harper&Row, 1971.