Siraranghom, W. (2020) “The Analysis of Needs in English Speaking Skills and Problems of Navaminda Kasatriyadhiraj Royal Air Force Academy Graduates in Speaking English in the Workplace”, Dhammathas Academic Journal, 20(4), pp. 109–120. available at: https://so06.tci-thaijo.org/index.php/dhammathas/article/view/245227 (accessed: 27 August 2026).