Cita APA (7a ed.)

Não informado. (1962). Farm index. U.S. Department of Agriculture, Economic Research Service.

Cita Chicago Style (17a ed.)

Não informado. Farm Index. Washington: U.S. Department of Agriculture, Economic Research Service, 1962.

Cita MLA (8a ed.)

Não informado. Farm Index. U.S. Department of Agriculture, Economic Research Service, 1962.

Precaución: Estas citas no son 100% exactas.