Praparat Thitisupakul และผู้แต่งคนอื่นๆ. (2016) A Study of Factors Affecting Teaching and Learning Performance of English in Bangkok Metropolitan Schools. <i>Journal of MCU Peace Studies</i>, <i>4</i>(2), 245-259.Praparat Thitisupakul และผู้แต่งคนอื่นๆ. "A Study of Factors Affecting Teaching and Learning Performance of English in Bangkok Metropolitan Schools". Journal of MCU Peace Studies 4 (2016):245-259.Praparat Thitisupakul และผู้แต่งคนอื่นๆ. A Study of Factors Affecting Teaching and Learning Performance of English in Bangkok Metropolitan Schools. Peace Studies MCU:ม.ป.ท. 2016.