APA Edition Citation

United state, D. o. A. (1962). After a Hundred Years: The Year Book of Agriculture 1962. U S D A.

Chicago Edition Citation

United state, Department of Agriculture. After a Hundred Years: The Year Book of Agriculture 1962. U S A: U S D A, 1962.

MLA Edition Citation

United state, Department of Agriculture. After a Hundred Years: The Year Book of Agriculture 1962. U S D A, 1962.