A. Bashir, W., ولید, S. Othman, N. and عثمان (2005) “Spectrophotometric Determination of Benzocaine by Azo-Dye Formation Reaction with N - (1-naphthyl)ethylenediamine as Coupling Agent”, Journal of Education and Science (JES), 17(3), pp. 48–60. doi: 10.33899/edusj.2005.162863.