Aldi Saprianta Sitepu, Vivi Wulandari, Nur Cristina, Rike Andini, Jonathan Nainggolan, and Sri Kurnia Hastuti Sebayang, “Psycholinguistic Analysis of Language Disorders (Speech Delay) in Early Childhood and Treatment Efforts”, JU-PENDI , vol. 4, no. 01, pp. 72–81, Jul. 2026.