5Kaiser AP, Roberts MY. Advances in Early Communication andLanguage Intervention[J]. Journal of Early Intervention, 2011,(4): 298-300.
6Baby Sign language. Effective Communication through Sign Lan-guage for Babies[EB/OL], [2013-10-26]. http;//<vww. easyb-abysignlanguage.com/.
7Millar DC, Light JC, Schlosser RW. The Impact of Augmenta-tive and Alternative Communication Intervention on the SpeechProduction of Individuals with Developmental Disabilities: A Re-search ReviewQ]. J Speech Lang Hear Res,2006 , 49: 248-264.