Não informado. (1981). Dairy and food sanitation. International Association of Milk, Food and Environmental Sanitarians.
Chicago-referens (17:e uppl.)Não informado. Dairy and Food Sanitation. Ames, Iowa: International Association of Milk, Food and Environmental Sanitarians, 1981.
MLA-referens (8:e uppl.)Não informado. Dairy and Food Sanitation. International Association of Milk, Food and Environmental Sanitarians, 1981.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.