Rojkitjakul, Theeratas, Phrakrusamu Uthai Uthayamethee, and Phrakrupalad Watcharaphong Vachirapunyo. 2020. “NEW FARMER : Leadership of Thai Farmers in Thailand 4.0”. Journal of MCU Humanities Review 5 (2). ิิิBankok, Thailand:199-215. https://so03.tci-thaijo.org/index.php/human/article/view/219424.