APA-referens (7:e uppl.)

Weaver, J. C. (1957). Physical elements of geography (4th ed.). McGraw-Hill Book Company.

Chicago-referens (17:e uppl.)

Weaver, John C. Physical Elements of Geography. 4th ed. New York: McGraw-Hill Book Company, 1957.

MLA-referens (9:e uppl.)

Weaver, John C. Physical Elements of Geography. 4th ed. McGraw-Hill Book Company, 1957.