T. T. P. Tran 和 T. D. Nguyen, 《Code-Switching as a Cognitive Strategy in Learning English Speaking Skills across Interactional Contexts: Insights from EFL University Students》, J. Knowl. Learn. Sci. Technol., 卷 5, 期 2, 页 1–25, 6月 2026, doi: 10.60087/jklst.vol5.n2.001.