Sorabud Rungrojsuwan. 2003. First words : communicative development of 9-to 24-month-old Thai children. Field of Study Linguistics, Chulalongkorn University;
Sorabud Rungrojsuwan. (2003) First words : communicative development of 9-to 24-month-old Thai children . Chulalongkorn University/Bangkok.
Sorabud Rungrojsuwan. First words : communicative development of 9-to 24-month-old Thai children. . Bangkok:Chulalongkorn University, 2003.
Sorabud Rungrojsuwan. (2003) First words : communicative development of 9-to 24-month-old Thai children . Chulalongkorn University/Bangkok.