Rustika, Rustika, Heni Herlina, and Annisa Purwanggi. 2026. “The Effectiveness of PECS in Improving Expressive Communication Skills Among Second-Grade Students With Autism in Special Schools”. Ainara Journal (Jurnal Penelitian Dan PKM Bidang Ilmu Pendidikan) 7 (1):143-53. https://doi.org/10.54371/ainj.v7i1.1341.