Rumpai Samsithong. 2002. Thai version of early speech perception test for profoundly hearing impaired children (Thai ESP). Field of Study Communication Disorders, Mahidol University;
Rumpai Samsithong. (2002) Thai version of early speech perception test for profoundly hearing impaired children (Thai ESP) . Mahidol University/Bangkok.
Rumpai Samsithong. Thai version of early speech perception test for profoundly hearing impaired children (Thai ESP). . Bangkok:Mahidol University, 2002.
Rumpai Samsithong. (2002) Thai version of early speech perception test for profoundly hearing impaired children (Thai ESP) . Mahidol University/Bangkok.