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Elida E. PENINGKATAN MOTIVASI BELAJAR PKN SISWA KELAS IX. 7 SMP 21 KOTA PEKANBARU MELALUI PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE NUMBER HEADS TOGETHER. DJPKM [Internet]. 2018Jun.26 [cited 2024Apr.26];2(1):135-43. Available from: https://journal.unilak.ac.id/index.php/dinamisia/article/view/1077