Pimpa, Opart, Bunterng Tipmontean, Nattaya Youngyai, and Benchamaporn Pimpa. 2019. “Development of Beef Cattle Farmer Group of Suratthani Province for Response to Supply Chain”. Area Based Development Research Journal 11 (5). Nakhon Si Thammarat, Thailand:380-93. https://so01.tci-thaijo.org/index.php/abcjournal/article/view/204490.