Cita APA (7a ed.)
Walker, E. F. (1943). World crops derived from the Indians. Southwest Museum.
Cita Chicago Style (17a ed.)
Walker, Edwin F. World Crops Derived from the Indians. Los Angeles, California: Southwest Museum, 1943.
Cita MLA (9a ed.)
Walker, Edwin F. World Crops Derived from the Indians. Southwest Museum, 1943.
Precaución: Estas citas no son 100% exactas.