Kanyarach Wongphuka และ Teeradej Chai-Aroon. (2013) Competencies and social entrepreneur competency development: case studies of activists on children and youth issues in Nan province. Mahidol University:ม.ป.ท.Kanyarach Wongphuka และ Teeradej Chai-Aroon. 2013. Competencies and social entrepreneur competency development: case studies of activists on children and youth issues in Nan province. ม.ป.ท.:Mahidol University;Kanyarach Wongphuka และ Teeradej Chai-Aroon. Competencies and social entrepreneur competency development: case studies of activists on children and youth issues in Nan province. ม.ป.ท.:Mahidol University, 2013. Print.