KHOIRIYAH, K. Picture Exchange Communication System (PECS): A strategy to improve children’s speaking ability. JECCE (Journal of Early Childhood Care and Education), [S. l.], v. 3, n. 2, p. 111–123, 2021. DOI: 10.26555/jecce.v3i2.2589. Disponível em: http://journal2.uad.ac.id/index.php/jecce/article/view/2589. Acesso em: 7 nov. 2026.