Não informado. (1971). British farmer and stockbreeder. National Farmers Union.
Style de citation Chicago (17e éd.)Não informado. British Farmer and Stockbreeder. London: National Farmers Union, 1971.
Style de citation MLA (8e éd.)Não informado. British Farmer and Stockbreeder. National Farmers Union, 1971.
Attention : ces citations peuvent ne pas être correctes à 100%.