Harahap, Lokot Muda, Cristin Melani Br Ambarita, Dwi Utami Cahyati, Maria Magdalena Sihotang, Romulus Situmorang, and Marthen Yosef Silaban. 2023. “Literature Study: Comparison of the Effectiveness of the Stepping Stone Method and the Modified Distribution (MODI) Method for Optimizing Transportation Costs”. Economic: Journal Economic and Business 2 (3):72-76. https://doi.org/10.56495/ejeb.v2i3.612.