T. Pham Quang and Q. Pham Thi Hong, “Changes in First-Year English-Majored Students’ Paragraph Writing Performance During a Blended Course at a Public University in Hanoi”, J. Knowl. Learn. Sci. Technol., vol. 5, no. 3, pp. 38–51, Sep. 2026, doi: 10.60087/jklst.vol5.n3.003.