Harnas, Denny Mulyani, and Abna Hidayati. “Pengembangan LIT Topik Keliling Dan Luas Persegi Panjang Berbasis Pendekatan Realistic Mathematics Education Di Sekolah Dasar”. Jurnal Basicedu 5, no. 1 (November 9, 2020): 77–87. Accessed July 22, 2024. https://jbasic.org/index.php/basicedu/article/view/567.