W. Ramadhana Putri, F. Yanto, A. Nuzullah Putri, and R. Evita Putri, “The Implementation of the Problem-Based Learning (PBL) Model Assisted by Wordwall on Students’ Learning Achievement at SMPN 12 Padang”, smt, vol. 8, no. 2, pp. 102–110, Oct. 2025.