Juthavantana, J., N. . Sakunpong, U. . Prasertsin, and M. Charupheng. “Confirmatory Factor Analysis of Active Aging Scale for Thai People in a Nursing Home”. University of the Thai Chamber of Commerce Journal Humanities and Social Sciences, vol. 40, no. 3, Sept. 2020, pp. 50-64, https://so06.tci-thaijo.org/index.php/utccjournalhs/article/view/240422.