YASOZIDUHU HALAWA; ZULHAM SITORUS. 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, [S. l.], p. 4118–4132, 2026. Disponível em: https://proceeding.pancabudi.ac.id/index.php/ICEEGLOF/article/view/1990. Acesso em: 11 nov. 2026.