Benjawan Nhokaew และ Rukkiat Jitchati. (2016) A simple colorimetric method for the determination of aromatic amines. <i>KKU Engineering Journal</i>, <i>43</i>(S1), 137-140.Benjawan Nhokaew และ Rukkiat Jitchati. "A simple colorimetric method for the determination of aromatic amines". KKU Engineering Journal 43 (2016):137-140.Benjawan Nhokaew และ Rukkiat Jitchati. A simple colorimetric method for the determination of aromatic amines. Faculty of Engineering, Khon Kaen University:ม.ป.ท. 2016.