Allolangi, Roberto Patabang, and Asma Kurniati. “The Principal’s Efforts to Overcome the Problem of Teaching and Learning in the Field of Science ”. Jurnal Penelitian Pendidikan IPA 9, no. 1 (January 31, 2023): 510–515. Accessed May 5, 2024. https://jppipa.unram.ac.id/index.php/jppipa/article/view/2713.