Al-Saidi, Khaleda H, and Rana A Hammza. “Spectrophotometric Determination of Promethazine Hydrochloride and Paracetamol in Pharmaceutical Tablets”. Al-Nahrain Journal of Science 17, no. 1 (July 3, 2018): 14–23. Accessed May 22, 2026. https://mail.anjs.edu.iq/index.php/anjs/article/view/475.