ชินคำ พ., and ภักดีวุฒิ จ. “Motivational Strategies Affecting Decision Making Behavior of Life Assurance Agents in Roi Et”. Journal of Roi Et Rajabhat University, vol. 12, no. 1, June 2018, pp. 11-22, https://so03.tci-thaijo.org/index.php/reru/article/view/164776.