Tunprapussorn, K., and W. Kaewurai. “THE DEVELOPMENT OF CURRICULUM PROMOTING QUALITY OF LIFE AGING: CASE STUDY OF MUNICIPAL CITY, PHITSANULOK”. JOURNAL OF EDUCATION NARESUAN UNIVERSITY, vol. 22, no. 2, Feb. 2020, pp. 74-83, https://so06.tci-thaijo.org/index.php/edujournal_nu/article/view/125613.