Marpaung, J. B., E. Napitupulu, and S. Sugiharto. “Development of Geography E-Modules Based on Project-Based Learning to Improve Senior High School Students’ Learning Outcomes”. FINGER : Jurnal Ilmiah Teknologi Pendidikan, vol. 4, no. 2, June 2025, pp. 109-15, doi:10.58723/finger.v4i2.429.