Ryanta Bhaskara, S., & Sena, B. (2024). Perbandingan Tingkat Kebisingan Berbagai Bahan Peredam pada Knalpot Sepeda Motor Racing. Ranah Research : Journal of Multidisciplinary Research and Development, 6(5), 1957-1967. https://doi.org/10.38035/rrj.v6i5.1075