1. American Public Health Association. 1960. Standard Methods for the Examination of Dairy Products. American Publ. Health Ass., Inc., New York, New York.
2. Burch, C. W. 1966. Catalase test procedure. Personal communication received from Dr. Burch, Sept. 5, 1966, via Dr. H. S. Powell, Clemson Livestock Laboratory, Columbia, South Carolina.
3. A simple quantitative catalase procedure for abnormal milk;Janzen;J. Milk Food Technol.,1967
4. Variation in mastitis screening tests and milk composition of udder quarters under normal conditions and following omission of a milking;Natzke;J. Dairy Sci.,1965
5. New York Mastitis Control Laboratory. 1966. A comparison of the Wisconsin mastitis test, the modified Whiteside test, and the direct microscopic leucocyte count. Personal communication from Dr. H. G. Hodges (January 5, 1967), of data compiled at New York Mastitis Control Laboratory, Ithaca, New York.