Busba Tonthong. 1991. An analysis of communicative functions and grammatical forms of headlines in tourism advertisement in English printed media from 1986-1988. Faculty of Graduate Studies, Mahidol University;
Busba Tonthong. (1991) An analysis of communicative functions and grammatical forms of headlines in tourism advertisement in English printed media from 1986-1988 . Mahidol University/Bangkok.
Busba Tonthong. An analysis of communicative functions and grammatical forms of headlines in tourism advertisement in English printed media from 1986-1988. . Bangkok:Mahidol University, 1991.
Busba Tonthong. (1991) An analysis of communicative functions and grammatical forms of headlines in tourism advertisement in English printed media from 1986-1988 . Mahidol University/Bangkok.