Dang , Thi Hoang Mai, and Anh Nguyen. “The Impact Of Early Childhood Bilingualism On Cognitive Development: Comparative Studies”. Journal of Knowledge Learning and Science Technology ISSN: 2959-6386 (online), vol. 3, no. 2, June 2024, pp. 177-84, https://doi.org/10.60087/jklst.vol3.n2.p184.