Prasetiyo, Sofan, Dwijanto Dwijanto, and Sunarmi Sunarmi. “The Effectiveness of MURDER Cooperative Model towards Students’ Mathematics Reasoning Ability and Self Concept of Ten Grade”. Unnes Journal of Mathematics Education 6, no. 2 (August 30, 2017): 181-189. Accessed May 1, 2024. https://journal.unnes.ac.id/sju/ujme/article/view/13943.