Rungsayatorn, Shiepsumon, Suparp Chatraphorn, and Apinya Hirunwong. 2017. “Life Skills Development Pattern Leading to Quality of Life of Bangkok Elderly After Retirement”. Kasetsart Journal of Social Sciences 38 (1):423-34. https://so04.tci-thaijo.org/index.php/kjss/article/view/242640.