Thanh Giao, N. . “Spatial Variations of Surface Water Quality in Hau Giang Province, Vietnam Using Multivariate Statistical Techniques: DOI: 10.32526/Ennrj.18.4.2020.38”. Environment and Natural Resources Journal, vol. 18, no. 4, Sept. 2020, pp. 400-1, https://ph02.tci-thaijo.org/index.php/ennrj/article/view/240801.