Kobsuk Wasuthalainan. 2010. Attitudes of ticketing and reservation staff of Bangkok Airways towards in-house English training course. , Thammasat University;
Kobsuk Wasuthalainan. (2010) Attitudes of ticketing and reservation staff of Bangkok Airways towards in-house English training course . Thammasat University/Bangkok.
Kobsuk Wasuthalainan. Attitudes of ticketing and reservation staff of Bangkok Airways towards in-house English training course. . Bangkok:Thammasat University, 2010.
Kobsuk Wasuthalainan. (2010) Attitudes of ticketing and reservation staff of Bangkok Airways towards in-house English training course . Thammasat University/Bangkok.