ผิวนิล นายฐิตินันทน์. “Access to Telecommunications Services and Online Communication Usage Among Thai Elderly”. Journal of Digital Communications 1, no. 1 (December 15, 2016): 408–441. Accessed May 18, 2024. https://so04.tci-thaijo.org/index.php/NBTC_Journal/article/view/119101.