Umaroh, Liya, Novita Kurnia Ningrum, and Titien Suhartini Sukamto. “Meningkatkan Kemampuan Problem Solving Siswa-Siswi SMA Negeri 7 Semarang Melalui Bebras Challenge”. Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang 5, no. 3 (November 28, 2020): 312–318. Accessed March 9, 2025. https://jurnal.unmer.ac.id/index.php/jpkm/article/view/4320.