Chatchaisucha, S., P.-N. Pannachet, W. Soontornat, and B. Vongchavalitkal. “Health Status, Depression, and Quality of life among the Older Person in Ban -Thammapakorn, Nakhon Ratchasima Province”. Thai Red Cross Nursing Journal, vol. 12, no. 2, Feb. 2020, pp. 165-78, https://he02.tci-thaijo.org/index.php/trcnj/article/view/239955.