Saputro, Adi, Somakim Somakim, and Darmawijoyo Darmawijoyo. “Ethnomathematics Exploration on Purun Crafts of Pulau Geronggang for Middle School Mathematics Learning”. Jurnal Riset Pendidikan Matematika 10, no. 1 (May 31, 2023): 54–64. Accessed June 3, 2025. https://journal.uny.ac.id/index.php/jrpm/article/view/54062.