Vũ Thị, D. T., Đinh Thị, H. L., & Bùi Hương, G. (2021). SOME MEASURES TO FORM SHAPE ICONS FOR 5-6 YEARS OLDS CHILDREN. SCIENTIFIC JOURNAL OF TAN TRAO UNIVERSITY, 7(23). https://doi.org/10.51453/2354-1431/2021/622