1. Venkataraman, K. The chemistry of synthetic dyes. vol. 3. New York:Academic Press, 1970.
2. The analytical chemistry of synthetic dyes;Venkataraman,1977
3. Anon. The color index, vol. 3. 3rd ed. Bradford (UK)/Research Triangle Park, (NC):The Society of Dyers and Colourists and American Association of Textile Chemists and Colorists, 1971.
4. Venkataraman, K. The chemistry of synthetic dyes, Vol. 6. New York:Academic Press, 1972.
5. Environmental Chemistry of Dyes and Pigments;Reife,1996