Yasoziduhu Halawa, & Zulham Sitorus. (2026). Application of the Preference Selection Index (PSI) Method in the Decision Support System for Selecting Prospective OSIS Chairpersons at SMAN 1 Mandrehe. International Conference Epicentrum of Economic Global Framework, 4118–4132. Retrieved from https://proceeding.pancabudi.ac.id/index.php/ICEEGLOF/article/view/1990