- Anonymous (1959). Methods of Analysis of Milk and its Products, 3rd ed.,
- Milk Industry Foundation, N.W. Washington, D.C.
- Arora, K.L. (1987). Indian Dairyman, 39 (9) : 415-417.
- Indian Standards, (1981) SP: 18- Part XI, Handbook of Food Analysis.
- Dairy Products. Bureau of Indian Standards, New Delhi.
- Singh Kishan, Ogra J.L. and Rao Y.S. (1975). Indian J. Dairy Sci., 28 (4) : 304 - 305.