Taubah, Rofinda, Isnarto Isnarto, and Rochmad Rochmad. “Student Critical Thinking Viewed from Mathematical Self-Efficacy in Means Ends Analysis Learning With the Realistic Mathematics Education Approach”. Unnes Journal of Mathematics Education Research 7, no. 1 (September 25, 2018): 189-195. Accessed November 26, 2020. https://journal.unnes.ac.id/sju/index.php/ujmer/article/view/25562.