Sihombing, Pardomuan Robinson, and Lisna Sari. “PRINCIPAL COMPONENT ANALYSIS BIPLOT GLOBAL COMPETITIVENESS INDEX ASEAN COUNTRIES”. Jurnal Litbang Edusaintech 3, no. 1 (April 20, 2022): 25-32. Accessed May 23, 2026. https://cbt2olympicad6.unimus.ac.id/index.php/jle/article/view/26.