“DETERMINATION OF MORPHINE IN HUMAN URINE BY A SIMPLE REVERSE PHASE HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY METHOD WITH UV DETECTION”. International Journal of Pharmaceutical Sciences and Drug Research 5, no. 1 (January 1, 2013): 18–22. Accessed July 11, 2026. https://www.ijpsdronline.com/index.php/journal/article/view/233.