Humedy, Israa T., and Ismael M. Ali. 2017. “Spectrophotometric Determination of Sulfathiazole Using 2,4 –dinitrophenylhydrazine As Coupling Reagent”. Ibn AL-Haitham Journal For Pure and Applied Sciences 29 (2): 227-39. https://jih.uobaghdad.edu.iq/index.php/j/article/view/112.