Lestiana, Lestiana, and Rini Kurniasih. “Alat Peraga Konsep Luas Bangun Datar”. PRISMA, Prosiding Seminar Nasional Matematika (February 1, 2016): 36-43. Accessed December 21, 2024. https://journal.unnes.ac.id/sju/prisma/article/view/21423.