Sirait, Mojaza, and Ratih Hendayani. “TRANSFORMATION OF THE DRUG MONITORING SYSTEM THROUGH LEAN SIX SIGMA (LSS)”. International Journal Management and Economic 4, no. 3 (August 15, 2025): 01–14. Accessed January 29, 2026. https://journal.admi.or.id/index.php/IJME/article/view/2162.