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). Nakhon Si Thammarat, Thailand:325-42. https://so01.tci-thaijo.org/index.php/abcjournal/article/view/248992.