A. Hamdon, I., and N. S. Othman. “Diazotised P-Nitroaniline Reagent for the Determination of Trace Amounts of Salbutamol Sulphate in Aqueous Solution– Application to Pharmaceutical Preparations”. Rafidain Journal of Science, vol. 16, no. 8, June 2005, pp. 60-67, doi:10.33899/rjs.2005.42304.