Titaporn Poophangjai และ Porntep Khokhajaikiat. (2012) The Quality Improvement in Electronic Welding Process : A Case Study of Electronic Component Factory. <i>KKU Engineering Journal</i>, <i>39</i>(2), 155-164.Titaporn Poophangjai และ Porntep Khokhajaikiat. "The Quality Improvement in Electronic Welding Process : A Case Study of Electronic Component Factory". KKU Engineering Journal 39 (2012):155-164.Titaporn Poophangjai และ Porntep Khokhajaikiat. The Quality Improvement in Electronic Welding Process : A Case Study of Electronic Component Factory. Faculty of Engineering, Khon Kaen Univeristy:ม.ป.ท. 2012.