1. Southern California ordinal scales of development;Ashurst,1985
2. Assessment of prelinguistic communication of individuals with CHARGE;Bashinski,2011
3. The interpersonal context of infant vocalization;Bateson;Quarterly Progress Report of the research Laboratory of Electronics,1971
4. The effect of blindness on the early development of the self;Bigelow,1995
5. The development of joint attention in blind infants;Bigelow;Developmental Psychopathology,2003