Cita APA (7a ed.)

Northwest -- Wheat and Wheat farming -- Steptoe (Wash.).

Cita Chicago Style (17a ed.)

Northwest -- Wheat and Wheat Farming -- Steptoe (Wash.).

Cita MLA (8a ed.)

Northwest -- Wheat and Wheat Farming -- Steptoe (Wash.).

Precaución: Estas citas no son 100% exactas.