Não informado. (1989). Dairy, food and environmental sanitation. International Association of Milk, Food and Environmental Sanitarians.
Chicago-Zitierstil (17. Ausg.)Não informado. Dairy, Food and Environmental Sanitation. Ames, Iowa: International Association of Milk, Food and Environmental Sanitarians, 1989.
MLA-Zitierstil (8. Ausg.)Não informado. Dairy, Food and Environmental Sanitation. International Association of Milk, Food and Environmental Sanitarians, 1989.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.