Duc และผู้แต่งคนอื่นๆ. (2006) A Study on the LPG dual fuel combustion characteristics of an indirect injection compression ignition engine. Chulalongkorn University:ม.ป.ท.Duc และผู้แต่งคนอื่นๆ. 2006. A Study on the LPG dual fuel combustion characteristics of an indirect injection compression ignition engine. ม.ป.ท.:Chulalongkorn University;Duc และผู้แต่งคนอื่นๆ. A Study on the LPG dual fuel combustion characteristics of an indirect injection compression ignition engine. ม.ป.ท.:Chulalongkorn University, 2006. Print.