Utari, Wiwin Melia, et al. “Analisis Validitas Dan Reliabilitas E-Modul Terintegrasi Proses Pembuatan Keris Dengan Model Problem Based Learning”. Journal of Authentic Research, vol. 5, no. 3, July 2026, pp. 5584–5596, https://doi.org/10.36312/jar.v5i3.6344.