Não informado. (1971). British farmer and stockbreeder. National Farmers Union.
Chicagoスタイル(17版)引用形式Não informado. British Farmer and Stockbreeder. London: National Farmers Union, 1971.
MLA(8版)引用形式Não informado. British Farmer and Stockbreeder. National Farmers Union, 1971.
警告: この引用は必ずしも正確ではありません.