Kunta Mustaqim Abdul Somad, Dr. Yudha Prambudia, and Dr. Iphov Kumala Sriwana , trans. 2025. “Modeling the Relationship Between Green Supply Chain Management (GSCM) Elements and Operational Cost Efficiency Improvement in Pharmaceutical Companies Based on Systems Dynamics: A Case Study of PT. XYZ”. International Journal of Inventive Engineering and Sciences (IJIES) 12 (7): 8-12. https://doi.org/10.35940/ijies.H1093.12070725.