Siraranghom W. 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 [internet]. 2020 Dec. 30 [cited 2026 Sep. 18];20(4):109-20. available from: https://so06.tci-thaijo.org/index.php/dhammathas/article/view/245227