ชัชวาลขาญชนกิจ เ. “the Influence Factors Of A Participation And Attitude On The Sufficiency Economy Philosophy Of The Elderly Life Quality In Chumphon Province: Influence Factors Of A Participation And Attitude On The Sufficiency Economy Philosophy Of The Elderly Life Quality In Chumphon Province”. Journal of KMITL Business School, vol. 11, no. 2, Sept. 2021, pp. 37-46, https://so02.tci-thaijo.org/index.php/fam/article/view/249721.