5Gierut JA.Treatment efficacy:functional phonological disorders in children.J Speech Lang Hear Res,1998,41:S85-100.
6du Toit DF.The tongue structure and function relevant to disease and oral health.SADJ,2003,58:375-376,380-383.
7Kenney KW,Prather EM.Articulation development in preschool children:consistency of productions.J Speech Hear Res,1986,29:29-36.
8Caruso AJ,Strand EA.Motor speech disorders in children:definition,background,and a theoretical framework.In:Caruso AJ,Strand EA,eds.Clinical management of motor speech disorders in children.New York:Thieme Medical Publishers,1999.1-27.
9Forrest K.Are oral-motor exercises useful in the treatment of phonological/articulatory disorders? Semin Speech Lang,2002,23:15-26.
10Guisti Braislin MA,Cascella PW.A preliminary investigation of the efficacy of oral motor exercises for children with mild articulation disorders.Int J Rehabil Res,2005,28:263-266.