Jitae, samart. “Predictive Factors of Older farmer’s Quality of Life in Off-season Longan Production, Ban Hong District, Lamphun Province”. Research and Development Journal Sisaket Rajabhat University 8, no. 2 (December 23, 2021): 54–65. accessed September 3, 2026. https://so01.tci-thaijo.org/index.php/sskru-resarch/article/view/252629.