Cita APA (7a ed.)
(2006). Agricultural Resources & Environmental Indicators. United States Department of Agriculture.
Cita Chicago Style (17a ed.)
Agricultural Resources & Environmental Indicators. United States Department of Agriculture, 2006.
Cita MLA (9a ed.)
Agricultural Resources & Environmental Indicators. United States Department of Agriculture, 2006.
Precaución: Estas citas no son 100% exactas.