ChaowaritSapsawat, P. ., P. M. . Thitapanyo, Phrakhru Sudhikhamphirayana, and H. . Buarapha. “A Studyof the Development of the Quality of Life for the Elderin Accordance With the Bhavana 4 Case Study : Elderin BanHuai Hoi, That Thong Sub-District, PhuKhiao District, Chaiyaphum Province”. Journal of Graduate MCU KhonKaen Campus, vol. 6, no. 1, June 2019, pp. 58-72, https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/243613.