Safitri, Nur Anita Syamsi. “SUBSTITUSI FONEM DALAM PEMEROLEHAN FONOLOGI ANAK USIA 2 TAHUN: STUDI KASUS SUBJEK TUNGGAL: Phoneme Substitution in the Acquisition of Phonology in 2-Year-Old Children: A Single-Subject Case Study”. AUFKLARUNG: Jurnal Kajian Bahasa, Sastra Indonesia, dan Pembelajarannya 5, no. 2 (January 26, 2026): 131–138. Accessed June 9, 2026. https://etdci.org/journal/AUFKLARUNG/article/view/5253.