“Syntactic Errors in Simple Sentences of Five-Year-Old Kindergarten Children: A Systematic Literature Review”.
Al Hikmah Indonesian Journal of Early Childhood Islamic Education 9, no. 2 (December 31, 2025): 467–475. Accessed September 8, 2026.
https://www.ojs.mlati.id.or.id/index.php/ijecie/article/view/1172.