Nguyen Thi Trieu Tien, and Nguyen Thi Dieu Ha. “ THE ROLE, CHARACTERISTIC AND SIGNIFICANCE OF OBSERVATIONAL SKILL OF CHILDREN AGED 5 YEARS TO 6 YEARS OLD”. UED Journal of Social Sciences, Humanities and Education, Vol. 9, no. 1, Mar. 2019, pp. 117-22, doi:10.47393/jshe.v9i1.166.