Boonyoung, P., N. Klangnarong, W. Aphaiphong, K. Sriboonrueng, and R. Klingklai. “The Relationship of Personal Factors, The Nine Principles of Nutrition Practice and The Dietary Behavior of The Elderly in Tha Kradan Sub-District, KhiriRat Nikhom District, Surat Thani Province”. HCU Journal, vol. 27, no. 2, Dec. 2023, pp. 246-57, https://he01.tci-thaijo.org/index.php/HCUJOURNAL/article/view/258162.