Risa Laurie Mawardi. “An Early Insight into Language Acquisition: A Case Study of a 4-Year-Old Child’s Speech”. Kayee: Jurnal Pendidikan dan Ilmu Sosial 1, no. 1 (December 30, 2025): 29–34. Accessed May 4, 2026. https://ejournal.rumohjurnal.org/index.php/kayee/article/view/5.