Montira Yimsomboon. 2000. A survey of the body copy types and the grammatical forms of the tourism advertisements in the printed media from 1998 to 1999. Graduate School, Naresuan University;

Montira Yimsomboon. A survey of the body copy types and the grammatical forms of the tourism advertisements in the printed media from 1998 to 1999. . Phitsanulok:Naresuan University, 2000.

Montira Yimsomboon. (2000) A survey of the body copy types and the grammatical forms of the tourism advertisements in the printed media from 1998 to 1999 . Naresuan University/Phitsanulok.