Pakpahan, Jovita Tia Br, Marham Sitorus, Manihar Situmorang, Ratu Evina Dibyantini, and Marudut Sinaga. “Development of Laboratory Virtual Learning Media on Alkene Submaterial”. Hydrogen: Jurnal Kependidikan Kimia 14, no. 3 (June 30, 2026): 569–578. Accessed September 8, 2026. https://e-journal.undikma.ac.id/index.php/hydrogen/article/view/20980.