Amris, P., Rahmat Kartolo, and Sutikno. “The Effectiveness of Problem-Based Learning in Improving Fable Text Comprehension Among 5th Grade Elementary Students: A Classroom Action Research”. International Journal of Educational Research Excellence, vol. 5, no. 2, Apr. 2026, pp. 180-92, doi:10.55299/ijere.v5i2.1752.