Achmadi N, Sulton S. Visionary Leadership Model of the Madrasah Principal in Strengthening Learning Innovation at MI PAS Baitul Qur’an Gontor. JPK [Internet]. 2026 May 20 [cited 2026 May 22];11(SpecialIssue(2):255–262. Available from: http://journal.umpo.ac.id/index.php/JPK/article/view/13170