Fikri, A. Mafaza Kanzul, I Ketut Mahardika, and Slamet Hariyadi. “Validity of STEM-CT Based Textbooks to Improve Students Multi-Representation Ability”. Jurnal Paedagogy 11, no. 3 (July 15, 2024): 538–545. Accessed August 15, 2025. https://e-journal3.undikma.ac.id/index.php/pedagogy/article/view/11488.