U.S Department of Agriculture. (1964). Farmer ́s world: The yearbook of agriculture 1964. [editor no identificado].
Cita Chicago Style (17a ed.)U.S Department of Agriculture. Farmer ́s World: The Yearbook of Agriculture 1964. [Lugar de publicación no identificado]: [editor no identificado], 1964.
Cita MLA (8a ed.)U.S Department of Agriculture. Farmer ́s World: The Yearbook of Agriculture 1964. [editor no identificado], 1964.
Precaución: Estas citas no son 100% exactas.