Huy, T., 		Khanh, P., 		Van Anh, K., 		Thong, N., 		Hieu, T., 		Quynh, L., 		Tuan, N., & 		Thu, N.
2022 May 18.  Designing Teaching Process for Stem Topic “Traffic Signal Lights” for Upper-secondary School Students. VNU Journal of Science: Education Research. [Online] 38:2