Nguyen, P. A., Nguyen, T. K. H. and Nguyen, T. Q. (2019) “Life value education for 5-grade students at elementary schools in Cao Lanh City, Dong Thap Province”, Dong Thap University Journal of Science, (39), pp. 18–25. doi: 10.52714/dthu.39.8.2019.712.