1. AAMMC. 1982. Methods and Standards for the Production of Certified Milk. American Association of Medical Milk Commissions, Milwaukee, WI.
2. AOAC. 1984. Official Methods of Analysis. 14th ed. S. Williams (editor). Assoc. of Official Analytical Chemists, Arlington, VA.
3. BUEGAMER, W. R., MICHAUD, L. and ELVEHJEM, C. A. 1945. A simplified method for the determination of iron in milk J Biol. Chem. 158, 573–576.
4. COX, H. E. and PEARSON, D. 1962. Chemical Analysis of Foods. Chemical Publishing Co., New York.
5. HAND, D. B. and SHARP, P. F. 1939. The ribolflavin content of cow’s milk. J. Dairy Sci. 22, 779–783.