Liow, F. E. R., R. A. Indrawati, Z. Latuconsina, Hasnawati, and M. I. Faozi. “Operations Management: Roles and Duties of Suppliers and Shippers in Supply Chain Management”. International Journal of Economics (IJEC), vol. 3, no. 1, June 2024, pp. 604-10, doi:10.55299/ijec.v3i1.887.