Gultom, Maharani, Adam, Dini, Chastanti, Ika, DAN Siregar, Zunaidy. " Perbandingan Model Problem Based Learning dan Inquiry Terhadap Hasil Belajar Siswa di Mts Negeri 1 Rantauprapat" SIMBIOSA [Online], Volume 9 Nomor 1 (19 July 2020)