Não informado. (1923). Agriculture yearbook. U.S. Department of Agriculture.
Style de citation Chicago (17e éd.)Não informado. Agriculture Yearbook. Washington: U.S. Department of Agriculture, 1923.
Style de citation MLA (8e éd.)Não informado. Agriculture Yearbook. U.S. Department of Agriculture, 1923.
Attention : ces citations peuvent ne pas être correctes à 100%.