Nuriswaty, Kartika Sulistiya, Sadrack Luden Pagiling, and Nurhayati Nurhayati. “Visuospatial Reasoning of Eighth-Grade Students in Solving Geometry Problems: A Gender Perspective”. Beta: Jurnal Tadris Matematika 13, no. 2 (November 30, 2020): 152–167. Accessed May 13, 2021. https://jurnalbeta.ac.id/index.php/betaJTM/article/view/400.