Kisdiono, Toyib Febri, and U.S. Supardi. “Online or Blended Learning: Any Differences in Chemistry Learning Outcomes?”. Hydrogen: Jurnal Kependidikan Kimia 11, no. 1 (February 15, 2023): 8–14. Accessed August 16, 2025. https://e-journal3.undikma.ac.id/index.php/hydrogen/article/view/4561.