Muttaqi, Uzlifa, Kartono Kartono, and Nur Karomah Dwidayanti. 2021. “Diagnostic Analysis of Newman’s Types of Students’ Error in Finishing Questions of Mathematical Problem Solving”. Unnes Journal of Mathematics Education Research 10 (A), 32-40. https://journal.unnes.ac.id/sju/index.php/ujmer/article/view/34302.