Purba, Erika, 		Sidabutar, Ropinus, AND 		Simanungkalit, Rick.
" PENGARUH MODEL PROBLEM SOLVING TERHADAP KEMAMPUAN REPRESENTASI MATEMATIS SISWA DI KELAS VIII" <em>JURNAL RECTUM: Tinjauan Yuridis Penanganan Tindak Pidana</em> [Online], Volume 4 Number 2 (19 December 2024)