Não informado. (1981). Dairy and food sanitation. International Association of Milk, Food and Environmental Sanitarians.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Dairy and Food Sanitation. Ames, Iowa: International Association of Milk, Food and Environmental Sanitarians, 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Dairy and Food Sanitation. International Association of Milk, Food and Environmental Sanitarians, 1981.
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