Umardiyah, Fitri, and Sindi Yulia Anggraini. “Pengembangan Video Pembelajaran Materi Operasi Irisan Dan Gabungan Dua Himpunan”. JoEMS : Journal of Education and Management Studies 5, no. 4 (August 28, 2022): 48–52. Accessed April 17, 2026. http://ojs.unwaha.ac.id/index.php/joems/article/view/791.