Tran, Viet Nhi, and Tuan Vinh Nguyen. “Project-Based Learning in Early Childhood Education: A Bibliometric Analysis over Five Decades (1970–2023)”. Dong Thap University Journal of Science - Social Sciences and Humanities Issue, vol. 15, no. 3, Apr. 2026, pp. 1-16, doi:10.52714/dthu.15.3.2026.1781.