พิชญไพบูลย์ ปุณณรัตน์. “คิดนอกกรอบ”. Journal of Education Studies, Chulalongkorn University 44, no. 1 (March 31, 2016): 205–216. accessed September 11, 2026. https://so02.tci-thaijo.org/index.php/EDUCU/article/view/61611.