Sapitri, Elmi, et al. “Teorema Garis Berat Pada Segitiga (Teorema Apollonius)”. Cendekia: Jurnal Ilmiah Multidisiplin, vol. 1, no. 1, Aug. 2024, pp. 5-9, https://cendekia.co/index.php/cendekia/article/view/2.