Não informado. (1942). Agriculture Decisions. U.S. Department of Agriculture.
Style de citation Chicago (17e éd.)Não informado. Agriculture Decisions. Washington: U.S. Department of Agriculture, 1942.
Style de citation MLA (8e éd.)Não informado. Agriculture Decisions. U.S. Department of Agriculture, 1942.
Attention : ces citations peuvent ne pas être correctes à 100%.