Não informado. (1984). Pigs: An international magazine on pig keeping. Misset International.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Pigs: An International Magazine on Pig Keeping. Doetinchen, Holanda: Misset International, 1984.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Pigs: An International Magazine on Pig Keeping. Misset International, 1984.
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