Duangsanjun, W., and P. Suangpho. “Attitudes, Subjective Norms, Perceived Behavioral Control, and Intentions to Food Consumption Behaviors Among Older Persons With Uncontrolled Diabetes”. Journal of The Royal Thai Army Nurses, vol. 23, no. 1, May 2022, pp. 265-73, https://he01.tci-thaijo.org/index.php/JRTAN/article/view/246000.