1. Turbidimetric methods for measuring fat content of homogenized milk;Ashworth;J. Dairy Sci.,1969
2. Association of Official Agricultural Chemists. Official Methods of Analysis. 1965. 10th ed., p. 744. Washington, D.C.
3. Canada Department of Agriculture. 1954. Tests for Milk, Cream, Butter, Cheese, Ice Cream and Dairy By-Products. p. 14.
4. Photometric determination of fat in milk;Haugaard;J. Dairy Sci.,1966
5. Ultraviolet spectrophotometric determination of protein content in milk;Iwaida;J. Dairy Sci.,1967