1. American Association of Textile Chemists and Colorists and the Society of Dyers and Colorists of the United Kingdom. 1956. Color Index. 2nd ed.
2. Dairy Department of the Inspection Bureau of the Food Delivery Corporation of Japan. 1949. Examination on the Chemical Composition of Raw Milk.
3. Dye-Binding Method for Estimation of Protein in Milk;Dolby;J. Dairy Research,1961
4. Eine schnelle Methode zur Ermittelung des Eiweissgehaltes der Kuhmilch;Kofranyi;Milchwissenschaft,1950
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