APA (7th ed.) Zitazioa

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..

Chicago Style (17th ed.) Zitazioa

United States. Department of Agriculture eta 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.

MLA (9th ed.) Zitazioa

United States. Department of Agriculture eta Jack Hayes. Cutting Energy Costs. U.S. Dept. of Agriculture : For sale by the Supt. of Docs., U.S. G.P.O., 1980.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.