Ryanta Bhaskara, Surya, and Boni Sena. 2024. “Perbandingan Tingkat Kebisingan Berbagai Bahan Peredam Pada Knalpot Sepeda Motor Racing”. Ranah Research : Journal of Multidisciplinary Research and Development 6 (5), 1957-67. https://doi.org/10.38035/rrj.v6i5.1075.