Não informado. (1920). Milk Industry. National Dairymen's Association.
Style de citation Chicago (17e éd.)Não informado. Milk Industry. London: National Dairymen's Association, 1920.
Style de citation MLA (8e éd.)Não informado. Milk Industry. National Dairymen's Association, 1920.
Attention : ces citations peuvent ne pas être correctes à 100%.