Worawanna Petchkij. 2001. A study of the problems of ward nurses in private hospitals in Bangkok in communicating English with foreign patients. Department of English and Linguistics, Ramkhamhaeng University;
Worawanna Petchkij. (2001) A study of the problems of ward nurses in private hospitals in Bangkok in communicating English with foreign patients . Ramkhamhaeng University/Bangkok.
Worawanna Petchkij. A study of the problems of ward nurses in private hospitals in Bangkok in communicating English with foreign patients. . Bangkok:Ramkhamhaeng University, 2001.
Worawanna Petchkij. (2001) A study of the problems of ward nurses in private hospitals in Bangkok in communicating English with foreign patients . Ramkhamhaeng University/Bangkok.