Kawedhar, Maria C. S., Sri Mulyani, Sulistyo Saputro, and Sri Yamtinah. “Shadow Education in Indonesia: Is It Relevant to Students’ Critical Thinking Skills in Chemistry Learning?”. International Journal of Learning, Teaching and Educational Research 19, no. 11 (November 30, 2020): 223–241. Accessed May 22, 2026. https://ijlter.net/index.php/ijlter/article/view/214.