A.R Habbo, Dr., د., Mr.H.S Hammodi, and السيد. “The Effect Of Adding Ethanol To Leaded Gasoline on The Performance of Spark Ignition Engine”. Al-Rafidain Engineering Journal (AREJ) 18, no. 4 (August 28, 2010): 33–43. Accessed August 3, 2025. https://rjps.uomosul.edu.iq/index.php/arej/article/view/9856.