Suree Pengsombat. 1990. A study of pronominal usage in spoken Tai Song. Bangkok:Mahidol University;
Suree Pengsombat. (1990) A study of pronominal usage in spoken Tai Song (รายงานผลงานวิจัย). Mahidol University:Bangkok.
Suree Pengsombat. A study of pronominal usage in spoken Tai Song. Bangkok:Mahidol University, 1990.
Suree Pengsombat. (1990) A study of pronominal usage in spoken Tai Song (รายงานผลงานวิจัย). Mahidol University:Bangkok.