Budiono, Yusuf, and Dudi Permana. “Analysis of Propylene Glycol Raw Supplier Selection Using the Analytic Hierarchy Process Method”. European Journal of Business and Management Research 6, no. 2 (March 23, 2021): 69–73. Accessed March 23, 2023. https://ejbmr.org/index.php/ejbmr/article/view/783.