Não informado. (1989). Dairy, food and environmental sanitation. International Association of Milk, Food and Environmental Sanitarians.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Dairy, Food and Environmental Sanitation. Ames, Iowa: International Association of Milk, Food and Environmental Sanitarians, 1989.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Dairy, Food and Environmental Sanitation. International Association of Milk, Food and Environmental Sanitarians, 1989.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.