Akbar, M. S. and 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, pp. 667–673. Available at: https://sunankalijaga.org/prosiding/index.php/icrse/article/view/1150 (Accessed: 8 July 2026).