Armiati, Mila, Ahmad Harjono, and Susilawati Susilawati. “Mastery Concept of Harmonic Vibration With Meaningful Instructional Design Learning Model through Experimental Methods”. Jurnal Penelitian Pendidikan IPA 6, no. 2 (July 1, 2020): 199–204. Accessed November 23, 2024. https://jppipa.unram.ac.id/index.php/jppipa/article/view/353.