Haque EH, Wibawanto S, Sulistyana W. The Effectiveness of Problem-Based Learning in Object-Oriented Programming Instruction: A Classroom Action Research Study. JITPro [Internet]. 2025 Dec. 24 [cited 2026 Jun. 6];4(1):65-72. Available from: https://journal3.um.ac.id/index.php/ppg/article/view/7219