Anothai Dibakanaka และผู้แต่งคนอื่นๆ. (2011) A development of an e-learning competency-based English course module for chief flight attendants. Chulalongkorn University:ม.ป.ท.Anothai Dibakanaka และผู้แต่งคนอื่นๆ. 2011. A development of an e-learning competency-based English course module for chief flight attendants. ม.ป.ท.:Chulalongkorn University;Anothai Dibakanaka และผู้แต่งคนอื่นๆ. A development of an e-learning competency-based English course module for chief flight attendants. ม.ป.ท.:Chulalongkorn University, 2011. Print.