Ristono, A. ., T. . Wahyuningsih, and M. T. . Ibrahim. “The Application of Factor Analysis (FA) in Evaluating Suppliers Selection Criteria in PT. Wijaya Karya Beton Tbk Indonesia and Ranking Suppliers Using Technique for Order Preference by Similarity to Ideal Solutions (TOPSIS)”. RSF Conference Series: Engineering and Technology, vol. 1, no. 1, Nov. 2022, pp. 324-3, doi:10.31098/cset.v1i1.392.