APA-viite (7. p.)
Walker, E. F. (1943). World crops derived from the Indians. Southwest Museum.
Chicago-viite (17. p.)
Walker, Edwin F. World Crops Derived from the Indians. Los Angeles, California: Southwest Museum, 1943.
MLA-viite (9. p.)
Walker, Edwin F. World Crops Derived from the Indians. Southwest Museum, 1943.
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