Não informado. (2000). Agricultural library notes. U.S. Department of Agriculture.
Style de citation Chicago (17e éd.)Não informado. Agricultural Library Notes. Washington: U.S. Department of Agriculture, 2000.
Style de citation MLA (8e éd.)Não informado. Agricultural Library Notes. U.S. Department of Agriculture, 2000.
Attention : ces citations peuvent ne pas être correctes à 100%.