1.
เย็นเอง ส. Students Responsibility Behavior Modification by Positive Reinforcement Contingency and Suggestion Technique. JVEA [internet]. 2019 Sep. 1 [cited 2026 Sep. 14];2(1):11-25. available from: https://li01.tci-thaijo.org/index.php/JVIA/article/view/213661