Komarudin, Udin, Nia Nuraeni Suryaman, Martoni, and Marisa Hirary. “Analysis of the Effect of Fuel System, Fuel Types and Spark Plug Types on CO2 Gas Exhaust Using Factorial Design”. International Journal of Psychosocial Rehabilitation 24, no. 2 (April 30, 2020): 3271–3280. Accessed December 27, 2024. https://psychosocial.com/PSY/index.php/ijpr/article/view/2033.