Nuammano, C., and K. Rueangmontri. “Current and Desirable Conditions of Teacher’s Competency in English Learning Management for Secondary School in the Northeastern Part of Thailand”. Asian Interdisciplinary and Sustainability Review, vol. 8, no. 2, July 2019, pp. 201-8, https://so05.tci-thaijo.org/index.php/PSAKUIJIR/article/view/242935.