Hasanah, N., T. Sri Noor Asih, and I. Kharisudin. “Mathematical Problem Solving Skill Viewed from Epistemic Curiosity on Fostering Communities of Learners”. Unnes Journal of Mathematics Education Research, Vol. 10, no. A, Nov. 2019, pp. 134-9, http://journal.unnes.ac.id/sju/ujmer/article/view/35270.