Kij, Monika, and Agnieszka Leśniak-Stępień. “When Words Fall Silent – A Case Study of a Boy With Suspected Selective Mutism”. Logopedia Silesiana 14, no. 1 (June 30, 2025): 1–10. Accessed January 26, 2026. https://journals.us.edu.pl/index.php/LOGOPEDIASILESIANA/article/view/23164.