“Experimental Study of Performance and Emissions of a 4-Stroke Engine with a Capacity of 110cc”. Jurnal ELEMENTER (Elektro dan Mesin Terapan) 11, no. 1 (Mei 31, 2025): 51–59. Diakses Juli 11, 2026. https://jurnal.pcr.ac.id/index.php/elementer/article/view/6643.