Tagi, R. M., Al-Timimi, R. J., Hassan, M. M., & Hamzah, M. J. (2019). Spectrophotometric determination of promethazine HCl in pure and dosage forms. Journal of Biotechnology Research Center (JOBRC), 13(1), 52–57. https://doi.org/10.24126/jobrc.2019.13.1.568