Stany Zjednoczone. Department of Agriculture. Library & National Agricultural Library. Bibliography of Agriculture. US.Depart. of Agric. Library.
Citazione stile Chigago Style (17a edizione)Stany Zjednoczone. Department of Agriculture. Library e National Agricultural Library. Bibliography of Agriculture. Washington [D.C.]: US.Depart. of Agric. Library.
Citatione MLA (9a ed.)Stany Zjednoczone. Department of Agriculture. Library e National Agricultural Library. Bibliography of Agriculture. US.Depart. of Agric. Library.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.