A. Bashir, W., and N. S. Othman. “Spectrophotometric Determination of Benzocaine by Azo-Dye Formation Reaction With N - (1-naphthyl)ethylenediamine As Coupling Agent”. Journal of Education and Science (JES) 17, no. 3 (June 1, 2005): 48–60. Accessed August 7, 2025. https://ojs.uomosul.edu.iq/index.php/edusj/article/view/24193.