Naji Rashid, Qabas. “Spectrophotometric Determination of Diphenhydramine Hydrochloride and Application to Pharmaceutical Preparations”. Tikrit Journal of Pharmaceutical Sciences 8, no. 1 (April 22, 2023): 139–146. Accessed April 2, 2025. https://tjphs.tu.edu.iq/index.php/j/article/view/234.