Citazione Stile APA (7a Edizione)
(1998). Agricultural statistics 1998: National Agricultural Statistics Service. United States Department of Agriculture.
Citazione stile Chigago Style (17a edizione)
Agricultural Statistics 1998: National Agricultural Statistics Service. Washington: United States Department of Agriculture, 1998.
Citatione MLA (9a ed.)
Agricultural Statistics 1998: National Agricultural Statistics Service. United States Department of Agriculture, 1998.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.