Harnas DM, Hidayati A. Pengembangan LIT Topik Keliling dan Luas Persegi Panjang Berbasis Pendekatan Realistic Mathematics Education di Sekolah Dasar. basicedu [Internet]. 2020 Nov. 9 [cited 2024 Jul. 22];5(1):77-8. Available from: https://jbasic.org/index.php/basicedu/article/view/567