1. Association of Official Agricultural Chemists. Official and Tentative Methods of Analysis. 7th ed., pp. 235-239 and Table No. 41.28. Washington, D. C. 1950.
2. Dahlberg, A. C, Adams, H. S., and Held, M. E. Sanitary Milk Control and Its Relationship to the Sanitary, Nutritive and Other Qualities of Milk. National Research Council Publication, No. 250. 1953.
3. Richmond's Dairy Chemistry;Elsdon,1942
4. Thermometric Lag;Harper;Bull. Bur. of Standards,1912
5. The Cryoscopy of Milk;Hortvet;J. Ind. Eng. Chem.,1921