Panitas Sureeyatanapas และผู้แต่งคนอื่นๆ. (2016) English proficiency requirements for engineering graduates at private organizations in Thailand. <i>KKU Engineering Journal</i>, <i>43</i>(S1), 35-39.Panitas Sureeyatanapas และผู้แต่งคนอื่นๆ. "English proficiency requirements for engineering graduates at private organizations in Thailand". KKU Engineering Journal 43 (2016):35-39.Panitas Sureeyatanapas และผู้แต่งคนอื่นๆ. English proficiency requirements for engineering graduates at private organizations in Thailand. Faculty of Engineering, Khon Kaen University:ม.ป.ท. 2016.