Não informado. (1926). Yearbook of agriculture. U.S. Department of Agriculture.
Style de citation Chicago (17e éd.)Não informado. Yearbook of Agriculture. Washington: U.S. Department of Agriculture, 1926.
Style de citation MLA (8e éd.)Não informado. Yearbook of Agriculture. U.S. Department of Agriculture, 1926.
Attention : ces citations peuvent ne pas être correctes à 100%.