Saparudin, Yudhi. “THE ABILITY OF HIGH SCHOOL TEACHERS IN MAKING SYLLABUS AND LEARNING IMPLEMENTATION PLAN BASED ON PROBLEM BASED LEARNING”. Jurnal Penelitian Kebijakan Pendidikan 11, no. 3 (August 29, 2019): 131–145. Accessed November 11, 2025. https://jpkp.kemendikdasmen.go.id/index.php/litjak/article/view/208.