Teerakittikon, Thanawut, and Somsri Woenthong. “Money Saving Guideline for Preparations to Retirement of the Population in The Central Regional”. Journal of Industrial Business Administration 2, no. 2 (December 29, 2020): 40–58. Accessed April 18, 2024. https://so03.tci-thaijo.org/index.php/iba/article/view/249085.