APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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

Let op: Deze citaties zijn niet altijd 100% accuraat.