Não informado. (1977). The Pig Veterinary Society Proceedings. Pig Veterinary Society.
Chicagoスタイル(17版)引用形式Não informado. The Pig Veterinary Society Proceedings. Wilts, Inglaterra: Pig Veterinary Society, 1977.
MLA(8版)引用形式Não informado. The Pig Veterinary Society Proceedings. Pig Veterinary Society, 1977.
警告: この引用は必ずしも正確ではありません.