Astriani, Linda, and Nailah Azizah. “Pengembangan Media Pembelajaran Bioptry (Bilingual Pop Up Book Geometry: Bangun Datar)”. Jurnal Cendekia : Jurnal Pendidikan Matematika 7, no. 2 (July 6, 2023): 1936-1945. Accessed June 3, 2026. https://www.j-cup.org/index.php/cendekia/article/view/2192.