Naidnapa Leoprasertkul. 2001. A study of English learning achievement of pratom 5 students with visual impairments by applying total physical response [TPR] teaching approach : case study in the Bangkok School for the Blind. Field of Study Language and Culture for Communication and Development, Mahidol University;

Naidnapa Leoprasertkul. A study of English learning achievement of pratom 5 students with visual impairments by applying total physical response [TPR] teaching approach : case study in the Bangkok School for the Blind. . Bangkok:Mahidol University, 2001.

Naidnapa Leoprasertkul. (2001) A study of English learning achievement of pratom 5 students with visual impairments by applying total physical response [TPR] teaching approach : case study in the Bangkok School for the Blind . Mahidol University/Bangkok.