Khanthachai, Nathabhol. 2017. “Shaver, J. Myles (2005). Testing for Mediating Variables in Management Research: Concerns, Implications and Alternative Strategies. Journal of Management, Vol.31 No.3, June 2005: 330-353”. KASEM BUNDIT JOURNAL 18 (1):233-38. https://so04.tci-thaijo.org/index.php/jkbu/article/view/87590.