Azmi, Zahara Lutfiya, Apit Fathurohman, and Leni Marlina. “The Validity and Practicality of Student Worksheets on Waves and Sounds for Junior High School Students ”. Jurnal Penelitian Pendidikan IPA 8, no. 4 (October 31, 2022): 1764–1770. Accessed November 22, 2024. https://jppipa.unram.ac.id/index.php/jppipa/article/view/1797.