Intarakamhang, U., W. Kijthorntham, and N. Peungposop. “Causal Model of Work Behaviors in the Narcotics Control Board, Thailand”. The Journal of Behavioral Science, Vol. 12, no. 2, July 2017, pp. 107-21, https://so06.tci-thaijo.org/index.php/IJBS/article/view/94364.