Pornpen Rinswat. 1996. A comparison between Thai student attitudes toward English as a foreign language and their English proficiency at four public [state] university in Bangkok, Thailand. School of Education, University of Southern California;

Pornpen Rinswat. A comparison between Thai student attitudes toward English as a foreign language and their English proficiency at four public [state] university in Bangkok, Thailand. . Los Angeles:University of Southern California, 1996.

Pornpen Rinswat. (1996) A comparison between Thai student attitudes toward English as a foreign language and their English proficiency at four public [state] university in Bangkok, Thailand . University of Southern California/Los Angeles.