Audmuangpiea, Surasuk. 2020. “THE QUALITY OF LIFE THE ELDERS: A CASE STUDY OF SUMRAN SUB – DISTRICT MUNICIPALITY MUEANG KHON KAEN DISTRICT KHON KAEN PROVINCE”. Journal of Humanities and Social Sciences Mahamakut Buddhist University Isan Campus 1 (1):41-47. https://so06.tci-thaijo.org/index.php/jhsmbuisc/article/view/251376.