Não informado. (1976). Quick bibliography series. National Agricultural Library, Department of Agriculture.
Style de citation Chicago (17e éd.)Não informado. Quick Bibliography Series. Beltsville, Md: National Agricultural Library, Department of Agriculture, 1976.
Style de citation MLA (8e éd.)Não informado. Quick Bibliography Series. National Agricultural Library, Department of Agriculture, 1976.
Attention : ces citations peuvent ne pas être correctes à 100%.