Wathinputthiporn, Donchida, and Nichaphorn Srinoul. 2021. “Knowledge Management Guideline of Agricultural Process Innovation for Elderly’s Wellbeing in Krainok Elders School, Sukhothai Province”. Area Based Development Research Journal 13 (5):325-42. https://so01.tci-thaijo.org/index.php/abcjournal/article/view/248992.