Tiraporn Sriboonyong. 2003. A survey of the needs and problems of business administration students and of employees as a basis for materials selection for the English for business course at Ubon Ratchathani University. Field of Study Applied Linguistics, Mahidol University;

Tiraporn Sriboonyong. A survey of the needs and problems of business administration students and of employees as a basis for materials selection for the English for business course at Ubon Ratchathani University. . Bangkok:Mahidol University, 2003.

Tiraporn Sriboonyong. (2003) A survey of the needs and problems of business administration students and of employees as a basis for materials selection for the English for business course at Ubon Ratchathani University . Mahidol University/Bangkok.