Manee Jiranapakul. 1996. A survey of language needs for communication by Thai engineers. Bangkok:Mahidol University;
Manee Jiranapakul. (1996) A survey of language needs for communication by Thai engineers (รายงานผลงานวิจัย). Mahidol University:Bangkok.
Manee Jiranapakul. A survey of language needs for communication by Thai engineers. Bangkok:Mahidol University, 1996.
Manee Jiranapakul. (1996) A survey of language needs for communication by Thai engineers (รายงานผลงานวิจัย). Mahidol University:Bangkok.