Cong, N. N. ., H. P. T. . Thuy, O. T. T. . Kim, and P. N. . Viet. “Interdisciplinary Teaching in STEM Education: A Systematic Synthesis of Teachers’ Competencies at Lower and Upper Secondary Levels”. International Journal of Learning, Teaching and Educational Research, vol. 24, no. 11, Nov. 2025, pp. 808-25, http://www.ijlter.net/index.php/ijlter/article/view/2609.