Vonok, Lampung, Worakamol Lekham, Wanasri Wawngam, Kritkantorn Suwannaphant, and Noppcha Singweratham. 2022. “The Association between Health Literacy and Quality of Life in Elderly People, Suwannaphum District Roi Et Province”. Journal of Vongchavalitkul university 35 (2):51-66. https://ph01.tci-thaijo.org/index.php/vujournal/article/view/248331.