1. American Public Health Association Reference Committee. 1958. Membrane filters for coliform and total counts of milk. Report by Reference Committee to Subcommittee on Standard Methods for the Examination of Dairy Products. American Public Health Association Washington D.C.
2. Arbuckle W. S. 1977. Ice cream 3rd ed. p. 35. Avi Publishing Co. Westport Conn.
3. The Millipore filter technique in the dairy industry;Barber F. W.;J. Milk Food Technol.,1954
4. Canadian Department of National Health and Welfare. 1975. Report of the Advisory Committee on Food Safety Assessment. Department of National Health and Welfare Ottawa.
5. A rapid method for counting bacteria in raw milk;Cousins C. M.;Dairy Ind. Int.,1979