Simanjuntak, Lasroin, and Hudson Sidabutar. “The Effectiveness of Biology Learning in the Materials of the Respiration System Based on Integrated Multimedia Character Education at SMAN 2 Percut SSi Tuan T.P 2021/2022”. Educenter : Jurnal Ilmiah Pendidikan 1, no. 9 (September 25, 2022): 618–622. Accessed December 2, 2024. https://jurnal.arkainstitute.co.id/index.php/educenter/article/view/381.