Jumari, Eko Okta. “Snowball Throwing: The Critical Thinking and Self-Efficacy Revolution”. Pasundan Journal of Mathematics Education : Jurnal Pendidikan Matematika 14, no. 2 (November 30, 2024): 95–111. Accessed March 10, 2025. https://journal.unpas.ac.id/index.php/pjme/article/view/16551.