1.
Siregar A, Ananda R. Analisis Kamampuan Reversible Thinking pada Materi Himpunan di Kelas VII SMP Swasta BPI Palu Kurau. cendekia [Internet]. 11May2023 [cited 1Oct.2025];7(2):1265-73. Available from: https://www.j-cup.org/index.php/cendekia/article/view/2265