Hamdani, H. PENGARUH MODEL PEMBELAJARAN KOOPERATIF TIPE CO-OP CO-OP (CO-OPERATION CO-OPERATIVE) TERHADAP PRESTASI BELAJAR SISWA MATERI POKOK TURUNAN FUNGSI KELAS XI IPS SMAN 1 MASBAGIK. MPM 2013, 1, 127-136.