Zulfah, Zulfah. “Analisis Kemampuan Peserta Didik Smp Di Bangkinang Melalui Penyelesaian Soal Pisa 2015”. Jurnal Cendekia : Jurnal Pendidikan Matematika 3, no. 2 (October 23, 2019): 350-362. Accessed May 25, 2026. https://j-cup.org/index.php/cendekia/article/view/126.