“Application of Token Economy to Increase Learning Concentration for Children With Autism Spectrum Disorder (ASD)”. Psikologia: Jurnal Pemikiran dan Penelitian Psikologi 19, no. 2 (November 20, 2024): 127–137. Accessed February 4, 2026. https://idjpcr.usu.ac.id/jppp/article/view/17723.