Cita APA (7a ed.)
(1992). Agricultural Prices: 1991 Summary. United States Department of Agriculture.
Cita Chicago Style (17a ed.)
Agricultural Prices: 1991 Summary. Washington: United States Department of Agriculture, 1992.
Cita MLA (9a ed.)
Agricultural Prices: 1991 Summary. United States Department of Agriculture, 1992.
Precaución: Estas citas no son 100% exactas.