Não informado. (1943). Bibliographical bulletin. U.S. Department of Agriculture.
Style de citation Chicago (17e éd.)Não informado. Bibliographical Bulletin. Washington: U.S. Department of Agriculture, 1943.
Style de citation MLA (8e éd.)Não informado. Bibliographical Bulletin. U.S. Department of Agriculture, 1943.
Attention : ces citations peuvent ne pas être correctes à 100%.