Le, Thi Kim Anh, et al. “Training Cooperation Skills for 4-5 Years Old Preschool Children through Themed Role-Play Games at Cao Lanh City, Dong Thap Province”. Dong Thap University Journal of Science, vol. 14, no. 1, Feb. 2025, pp. 22-28, doi:10.52714/dthu.14.1.2025.1472.