Wahyu Pangeran, Musa, et al. “PENGARUH INTAKE DAN EXHAUST LOBE LIFT SERTA CELAH KATUP TERHADAP KONSUMSI BAHAN BAKAR”. Steam Engineering, vol. 1, no. 2, Mar. 2020, pp. 44-49, doi:10.37304/jptm.v1i2.683.