APA (7th ed.) Citation

United States. Dept. of Agriculture. (1978). Yearbook of agriculture. U.S. G.P.O..

Chicago Style (17th ed.) Citation

United States. Dept. of Agriculture. Yearbook of Agriculture. Washington: U.S. G.P.O., 1978.

MLA (8th ed.) Citation

United States. Dept. of Agriculture. Yearbook of Agriculture. U.S. G.P.O., 1978.