Damanik, Aryana, dan Novisita Ratu. “Analysis Stage of Problem Solving in Completing the Math Olympiad Geometry Content in Junior High School 2 Salatiga”. Math Didactic: Jurnal Pendidikan Matematika 7, no. 2 (September 14, 2021): 186-194. Diakses Juli 5, 2025. https://jurnal.stkipbjm.ac.id/index.php/math/article/view/811.