Sanprasit, Y., and T. Jaengsawang. “The Influence of Job Stress and Coping Strategies on the Work Efficiency of Call Center Emplyees at Telecommunication Company”. The Journal of Behavioral Science, vol. 2, no. 1, July 2012, pp. 11-22, https://so06.tci-thaijo.org/index.php/IJBS/article/view/2143.