Sampao, K., & Surinya, T. (2021). Self-Directed Learning, Family Relationship, Adversity Quotient and Learning Behavior of Student’s Vocational Certificate at College of Vocational Education, Surat Thani Province . NKRAFA Journal of Humanities and Social Sciences, 9, 56–70. Retrieved from https://so04.tci-thaijo.org/index.php/KANNICHA/article/view/248920