Yen, P. H., N. A. Thi, L. T. . Thao, P. T. . Thuy, N. H. . Tra, and H. T. A. . Thu. “Impact of Geographical Factors on Vietnamese Teachers’ Satisfaction With ‘Teacher Activity Groups’ Project”. International Journal of Learning, Teaching and Educational Research, vol. 22, no. 9, Sept. 2023, pp. 62-84, https://ijlter.net/index.php/ijlter/article/view/1731.