Giziewska, Marta. “Alternative and Augmentative Communication in the Speech and Communication Development Process of Children With Autism Spectrum Disorder”. Logopedia Silesiana, no. 9 (December 29, 2020): 1-18. Accessed April 24, 2024. https://www.journals.us.edu.pl/index.php/LOGOPEDIASILESIANA/article/view/11438.