Não informado. (1922). Brown swiss bulletin. Brown Swiss Cattle Breeders Association.
Chicagoスタイル(17版)引用形式Não informado. Brown Swiss Bulletin. Beloit, Wis: Brown Swiss Cattle Breeders Association, 1922.
MLA(8版)引用形式Não informado. Brown Swiss Bulletin. Brown Swiss Cattle Breeders Association, 1922.
警告: この引用は必ずしも正確ではありません.