โชควรกุล เ. “THE EFFICIENT DEVELOPMENT AND PRODUCTIVITY TO RAISE THE VALUE ADDED OF THE MANUFACTURING INDUSTRY, AGRICULTURE, ‘CANE’ IN THE NORTHEAST”. Research Community and Social Development Journal, vol. 12, no. 1, Jan. 2018, pp. 181-90, https://so04.tci-thaijo.org/index.php/NRRU/article/view/161754.