Veronika, Veronika, AND 		Kristin, Firosalia.
" EFEKTIVITAS MODEL PEMBELAJARAN DISCOVERY LEARNING DAN PROBLEM SOLVING TERHADAP KEMAMPUAN MEMECAHKAN MASALAH IPS SISWA KELAS 5 SD" <em>Indonesian Journal of Basic Education</em> [Online], Volume 3 Number 2 (18 July 2020)