Pimsiri Pootrakul และ Chindalak Vadhanasindhu. (2014) Key determinants of education quality of secondary schools in Bangkok. National Institute of Development Administration:ม.ป.ท.Pimsiri Pootrakul และ Chindalak Vadhanasindhu. 2014. Key determinants of education quality of secondary schools in Bangkok. ม.ป.ท.:National Institute of Development Administration;Pimsiri Pootrakul และ Chindalak Vadhanasindhu. Key determinants of education quality of secondary schools in Bangkok. ม.ป.ท.:National Institute of Development Administration, 2014. Print.