Cihak, David; Smith, C. C.; Cornett, A.; Coleman, M. B. The Use of Video Modeling With the Picture Exchange Communication System to Increase Independent Communicative Initiations in Preschoolers with Autism and Developmental Delays (англ.) // Focus on Autism and Other Developmental Disabilities[англ.] : journal. — 2012. — 12 March (vol. 27, no. 3). — P. 3—10. — doi:10.1177/1088357611428426.
Cihak, David; Smith, C. C.; Cornett, A.; Coleman, M. B. The Use of Video Modeling With the Picture Exchange Communication System to Increase Independent Communicative Initiations in Preschoolers with Autism and Developmental Delays (англ.) // Focus on Autism and Other Developmental Disabilities[англ.] : journal. — 2012. — 12 March (vol. 27, no. 3). — P. 3—10. — doi:10.1177/1088357611428426.
