1.
Islamiyah W, Suryadi D, Prabawanto S, Gulvara M. Learning Obtacles for Junior High School Students on The Concept of Quadratic Equations. cendekia [Internet]. 4Aug.2023 [cited 16Apr.2026];7(3):2313-26. Available from: https://www.j-cup.org/index.php/cendekia/article/view/2609