Akbar, M. S., & Pramono, S. N. W. (2024). Vendor Performance Evaluation Using Kraljic’s Purchasing Portfolio Matrix and Analytic Hierarchy Process Method (Case study: PT Pertamina Trans Kontinental Central Jakarta). Proceeding International Conference on Religion, Science and Education, 3, 667–673. Retrieved from https://sunankalijaga.org/prosiding/index.php/icrse/article/view/1150