Phadungphat , Witchayapha, Benchamas Yooprasert, and Sineenuch Khrutmuang Sanserm. “Area-Based Agricultural Extension Model to Increase Efficiency of Cassava Production by Farmers in the Northeastern Region of Thailand”. Journal of Vocational Education in Agriculture 8, no. 1 (May 28, 2024): 131–145. accessed September 11, 2026. https://li01.tci-thaijo.org/index.php/JVIA/article/view/259477.