Patmara, Reza, Agus Wahyudin, and Endang Susilaningsih. 2019. “Implementation of Problem-Based Learning Model With Ethnomathematics Nuance Towards Students’ Problem-Solving Ability and Mathematics Anxiety”. Journal of Primary Education 8 (5), 188-96. https://journal.unnes.ac.id/sju/jpe/article/view/31350.