Ha, T. T. T., V. T. T. Lien, and T. T. Hang. “Early Childhood Education through a Child-Centered Approach: Theoretical Foundations and Key Issues”. Macrolinguistics and Microlinguistics, vol. 6, no. 2, May 2025, pp. 74-84, doi:10.21744/mami.v6n2.40.