Panrattana Chenaksara. 2005. Needs analysis for english communication skills of Thai Airways International cabin crew. Field of Study Development Communication, Kasetsart University;
Panrattana Chenaksara. (2005) Needs analysis for english communication skills of Thai Airways International cabin crew . Kasetsart University/Bangkok.
Panrattana Chenaksara. Needs analysis for english communication skills of Thai Airways International cabin crew. . Bangkok:Kasetsart University, 2005.
Panrattana Chenaksara. (2005) Needs analysis for english communication skills of Thai Airways International cabin crew . Kasetsart University/Bangkok.