1.
Kartinah, Toto Nusantara, Sudirman, Tjang Daniel. Identifying Cognitive Obstacle on the Topic of Definite Integral among Prospective Teacher. Elementary Education Online [Internet]. 2023 Dec. 15 [cited 2024 Jul. 27];20(3):186-92. Available from: https://ilkogretim-online.org/index.php/pub/article/view/1621