Fadhilah Hartati, Yunisa. “Perbandingan Luas Segitiga Pada Teorema Cross Bertingkat”. Buletin Poltanesa 23, no. 2 (December 27, 2022): 676–681. Accessed November 20, 2024. https://e-journal.politanisamarinda.ac.id/index.php/tanesa/article/view/1166.