Ali และผู้แต่งคนอื่นๆ. 2008. Perception towards native and non-native English speaking teachers and English education in Khon Kaen, Thailand. Faculty of Humanities and Social Sciences, Khon Kaen University;
Ali และผู้แต่งคนอื่นๆ. (2008) Perception towards native and non-native English speaking teachers and English education in Khon Kaen, Thailand . Khon Kaen University/Khon Kaen.
Ali และผู้แต่งคนอื่นๆ. Perception towards native and non-native English speaking teachers and English education in Khon Kaen, Thailand. . Khon Kaen:Khon Kaen University, 2008.
Ali และผู้แต่งคนอื่นๆ. (2008) Perception towards native and non-native English speaking teachers and English education in Khon Kaen, Thailand . Khon Kaen University/Khon Kaen.