Cita APA (7a ed.)

United States. Dept. of Agriculture. (1980). The ... yearbook of agriculture. U.S. Dept. of Agriculture : For sale by the Supt. of Docs., U.S. G.P.O..

Cita Chicago Style (17a ed.)

United States. Dept. of Agriculture. The ... Yearbook of Agriculture. Washington, D.C.: U.S. Dept. of Agriculture : For sale by the Supt. of Docs., U.S. G.P.O., 1980.

Cita MLA (8a ed.)

United States. Dept. of Agriculture. The ... Yearbook of Agriculture. U.S. Dept. of Agriculture : For sale by the Supt. of Docs., U.S. G.P.O., 1980.