Jingmark, Sarinya, Piyathida Kuhirunyaratn, Ampornpan Theeranut, and Pat Nonjui. 2020. “Subjective well-being and related factors among community-dwelling elderly in Udon Thani Province, Thailand”. Asia-Pacific Journal of Science and Technology 25 (01):APST-25. https://so01.tci-thaijo.org/index.php/APST/article/view/201240.