Weaver, J. C. (1957). Physical elements of geography (4th ed.). McGraw-Hill Book Company.
Chicago-viite (17. p.)Weaver, John C. Physical Elements of Geography. 4th ed. New York: McGraw-Hill Book Company, 1957.
MLA-viite (9. p.)Weaver, John C. Physical Elements of Geography. 4th ed. McGraw-Hill Book Company, 1957.
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