ประดิพัทธ์นฤมล จุฑาธิป, Kanitha Chaikeaw, Khongdet Phasinam, Jirasit Inthorn, Pakawadee Phugan, and Passakorn Leevisitpattana. “A Study of the Value Chain of Coffee Processes for the Strength and Quality of Life of Ban Rak Thai Community, Chomphu Sub-district, Noen Maprang District, Phitsanulok Province”. Dhammathas Academic Journal 22, no. 1 (March 31, 2022): 15–28. accessed October 3, 2026. https://so06.tci-thaijo.org/index.php/dhammathas/article/view/250692.