Sugiartono, S., W. Wagino, D. Afdal, and R. Wahyudi. “Pemanfaatan Bioetanol Limbah Kelapa Muda Dan Pengaruhnya Terhadap Emisi Sepeda Motor Empat Langkah Injeksi”. AEEJ : Journal of Automotive Engineering and Vocational Education, Vol. 1, no. 1, June 2020, pp. 1-8, doi:https://doi.org/10.24036/aeej.v1i1.1.