Pratinuari, Karina, Sugiarto Sugiarto, and Emi Pujiastuti. “KEEFEKTIFAN PENDEKATAN OPEN-ENDED DENGAN PEMBELAJARAN KONTEKSTUAL TERHADAP KEMAMPUAN BERPIKIR KREATIF”. Unnes Journal of Mathematics Education 2, no. 1 (March 19, 2013). Accessed November 23, 2024. https://journal.unnes.ac.id/sju/ujme/article/view/3327.