Não informado. (2001). Swine Health and Production. American Association of Swine Practitioners.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Swine Health and Production. Bloomington, Ind: American Association of Swine Practitioners, 2001.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Swine Health and Production. American Association of Swine Practitioners, 2001.
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