Yasin, Y. ., N. S. . Abdul Latif, and A. H. . Abdul Malik. “Response Surface Methodology As a Tool to Study the Removal of Amido Black Dye from Aqueous Solution Using Anionic Clay Hydrotalcite”. Scientific Research Journal, vol. 7, no. 1, June 2010, pp. 51-64, doi:10.24191/srj.v7i1.9424.