Veera-orn Varavudhi. 2009. Radiotelephony communication problems between pilots and air traffic controllers : a case study of pilots of Thai Airways International and Aerothai air traffic controllers. Faculty of Humanities, Ramkhamhaeng University;
Veera-orn Varavudhi. (2009) Radiotelephony communication problems between pilots and air traffic controllers : a case study of pilots of Thai Airways International and Aerothai air traffic controllers . Ramkhamhaeng University/Bangkok.
Veera-orn Varavudhi. Radiotelephony communication problems between pilots and air traffic controllers : a case study of pilots of Thai Airways International and Aerothai air traffic controllers. . Bangkok:Ramkhamhaeng University, 2009.
Veera-orn Varavudhi. (2009) Radiotelephony communication problems between pilots and air traffic controllers : a case study of pilots of Thai Airways International and Aerothai air traffic controllers . Ramkhamhaeng University/Bangkok.