Srinakorn Prohmtong. 2004. A comparative study of verb expression between normal children and mentally retarded children. Field of Study Communication Disorders, Mahidol University;
Srinakorn Prohmtong. (2004) A comparative study of verb expression between normal children and mentally retarded children . Mahidol University/Bangkok.
Srinakorn Prohmtong. A comparative study of verb expression between normal children and mentally retarded children. . Bangkok:Mahidol University, 2004.
Srinakorn Prohmtong. (2004) A comparative study of verb expression between normal children and mentally retarded children . Mahidol University/Bangkok.