Siagian, Afriana, and Richards Gwynne. “An Integrated Model for Selecting and Evaluating Logistics Outsourcing Decisions Using AHP and PROMETHEE II”. Journal of Industrial Engineering and Education 1, no. 1 (March 19, 2023): 30–45. Accessed May 6, 2026. https://jiee.bksti.org/index.php/iee/article/view/11.