Sulaiman, Agung, Milana, Toto Sugiarto, and Nuzul Hidayat. “Perbandingan Penambahan Zat Aditif Minyak Serai Wangi Dan Minyak Cengkeh Terhadap Emisi Gas Buang Sepeda Motor”. MSI Transaction on Education 4, no. 4 (November 24, 2023): 191-200. Accessed May 15, 2026. https://msirp.org/journal/index.php/mted/article/view/130.