Haris Firmansah ML. PENGEMBANGAN MODUL AJAR DENGAN MODEL PROBLEM BASED LEARNING BERBASIS MASALAH PADA MATA KULIAH KONSEP DASAR IPS. jtiee [Internet]. 2023 Dec. 31 [cited 2025 May 29];7(2):108-15. Available from: https://journal.umg.ac.id/index.php/jtiee/article/view/7090