Suparman A, Sasongko RN, Kristiawan M. Implementation of School Problem Solving Management in Improving School Achievement. JMKSP [Internet]. 2021 May 3 [cited 2024 Dec. 22];6(2):200-13. Available from: https://jurnal.univpgri-palembang.ac.id/index.php/JMKSP/article/view/5570