ทัดมั่นส. and ปัญญาอ. (2018) “Behavioral Expression in Public Service of the Youth Center Officials in Bangkok”, Journal of Humanities and Social Sciences, Rajapruk University, 4(supplement), pp. 185-195. Available at: https://www.tci-thaijo.org/index.php/rpu/article/view/159635 (Accessed: 16December2019).