Vijucksana Hutanon ว. ห., and Suwanna Narkwiboonwong ส. น. “A Structural Model of the Elder Career Skill Development”. Dusit Thani College Journal, vol. 11, no. 3, Apr. 2018, pp. 312-24, https://so01.tci-thaijo.org/index.php/journaldtc/article/view/118682.