Pujiastuti, Heni, Rudi Haryadi, and Fahmi Ayatullah. “The Influence of the Inquiry Learning Model on Students Mathematical Critical Thinking Skill”. Unnes Journal of Mathematics Education 8, no. 3 (November 30, 2019): 216-223. Accessed October 23, 2021. https://journal.unnes.ac.id/sju/index.php/ujme/article/view/34640.