เย็นเอง ส. Students Responsibility Behavior Modification by Positive Reinforcement Contingency and Suggestion Technique. Journal of Vocational Education in Agriculture, [S. l.], v. 2, n. 1, p. 11–25, 2019. Disponível em: https://li01.tci-thaijo.org/index.php/JVIA/article/view/213661. Acesso em: 1 may. 2024.