Diana, Risma Firda, and Pratama Surya Bagus Kusuma. “Development of PBL Integrated Ethnomathematics Learning Tools to Develop Mathematical Problem-Solving Skills in Elementary School”. Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram 13, no. 3 (June 9, 2025). Accessed August 16, 2025. https://e-journal3.undikma.ac.id/index.php/prismasains/article/view/15868.