Não informado. (1929). Ayrshire Cattle Society journal. Ayrshire Cattle Herd Book Society.
Chicago-viite (17. p.)Não informado. Ayrshire Cattle Society Journal. Ayr, Escocia: Ayrshire Cattle Herd Book Society, 1929.
MLA-viite (8. p.)Não informado. Ayrshire Cattle Society Journal. Ayrshire Cattle Herd Book Society, 1929.
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