Saprudin, Saprudin, Liliasari Liliasari, Ary Setijadi Prihatmanto, Andhy Setiawan, and Fatma Hamid. “The Design of OpticalGamification (OG) With Random Model in Learning Interference and Diffraction”. Momentum: Physics Education Journal 5, no. 1 (January 31, 2021): 29–42. Accessed April 19, 2024. https://ejournal.unikama.ac.id/index.php/momentum/article/view/4889.