Jagadhita, Phaundra Rexha, and Ali Akbar. “The Effect Of The Addition Of Db Killer On The Noise Of Yamaha Vixion 150cc Racing Motorcycle”. Procedia of Engineering and Life Science 40 (July 14, 2023). Accessed May 9, 2024. https://pels.umsida.ac.id/index.php/PELS/article/view/1396.