Noppadon Jokkaw และ Tanit Tongthong. (2017) Measurement of importance levels of knowledge areas and competency levels of construction project managers in Lao PDR. <i>Engineering and Applied Science Research</i>, <i>44</i>(1), 20-26.Noppadon Jokkaw และ Tanit Tongthong. "Measurement of importance levels of knowledge areas and competency levels of construction project managers in Lao PDR". Engineering and Applied Science Research 44 (2017):20-26.Noppadon Jokkaw และ Tanit Tongthong. Measurement of importance levels of knowledge areas and competency levels of construction project managers in Lao PDR. Faculty of Engineering, Khon Kaen University:ม.ป.ท. 2017.