APA引文

United States. Department of Agriculture. Economic Research Service. (1994). Agricultural resources and environmental indicators. The Service.

Chicago Style (17th ed.) Citation

United States. Department of Agriculture. Economic Research Service. Agricultural Resources and Environmental Indicators. Washington, DC: The Service, 1994.

MLA引文

United States. Department of Agriculture. Economic Research Service. Agricultural Resources and Environmental Indicators. The Service, 1994.

警告：這些引文格式不一定是100％准確.