Marpaung JB, Napitupulu E, Sugiharto S. Development of Geography E-Modules Based on Project-Based Learning to Improve Senior High School Students’ Learning Outcomes. FINGER J. Ilm. Teknol. Pendidik. [Internet]. 2025 Jun. 18 [cited 2025 Aug. 5];4(2):109-15. Available from: https://ejournal.1001tutorial.com/index.php/finger/article/view/429