Kriengkrai Watanasawad. 2006. An ethnolinguistic study in the lyrics of Thai country and city songs. Field of Study Linguistics, Mahidol University;
Kriengkrai Watanasawad. (2006) An ethnolinguistic study in the lyrics of Thai country and city songs . Mahidol University/Bangkok.
Kriengkrai Watanasawad. An ethnolinguistic study in the lyrics of Thai country and city songs. . Bangkok:Mahidol University, 2006.
Kriengkrai Watanasawad. (2006) An ethnolinguistic study in the lyrics of Thai country and city songs . Mahidol University/Bangkok.