วุฒิศิริพรรณ ฉ., รัตนโอฬาร ธ. and คิดดี ก. 2015. The Causal Factors Affecting Life Skills of Mathayomsuksa 3 Students in Secondary Education Service Area Office 2. Journal of Industrial Education. 14, 2 (Aug. 2015), 471–478.