United States. Department of Agriculture & Hayes, J. (1980). Cutting Energy Costs. U.S. Dept. of Agriculture : For sale by the Supt. of Docs., U.S. G.P.O..
Citazione stile Chigago Style (17a edizione)United States. Department of Agriculture e Jack Hayes. Cutting Energy Costs. [Washington, D.C.]: U.S. Dept. of Agriculture : For sale by the Supt. of Docs., U.S. G.P.O., 1980.
Citatione MLA (9a ed.)United States. Department of Agriculture e Jack Hayes. Cutting Energy Costs. U.S. Dept. of Agriculture : For sale by the Supt. of Docs., U.S. G.P.O., 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.