A. N. Santi, M. Muhammadi, A. Adrias, and R. Rayendra, “Development of Interactive Teaching Materials Based on Problem-Based Learning (PBL) in Indonesian Language Learning for Fifth Grade Elementary Students”, JES, vol. 10, no. 1, pp. 2048–2059, Jan. 2026, doi: 10.31258/jes.10.1.p.2048-2059.