Kanokwan Boonsri. (2003) Comparison study of acoustic analysis of maximum speech performance tasks between normal children and children with spastic dysarthria in Chiangmai province. Mahidol University,:ม.ป.ท.Kanokwan Boonsri. 2003. Comparison study of acoustic analysis of maximum speech performance tasks between normal children and children with spastic dysarthria in Chiangmai province. ม.ป.ท.:Mahidol University,;Kanokwan Boonsri. Comparison study of acoustic analysis of maximum speech performance tasks between normal children and children with spastic dysarthria in Chiangmai province. ม.ป.ท.:Mahidol University, 2003. Print.