Kurnia Dewi. BEST PRACTISE CHAIRMAN OF MUSYAWARAH GURU MATA PELAJARAN (MGMP) ECONOMY IN DEVELOPING THE PROFESSIONAL COMPETENCY OF ECONOMIC TEACHERS BANYUWANGI DISTRICT: HAKIKAT GURU ”KAYA” BEST PRACTISE KETUA MUSYAWARAH GURU MATA PELAJARAN (MGMP) EKONOMI DALAM PENGEMBANGAN KOMPETENSI PROFESIONAL GURU EKONOMI KABUPATEN BANYUWANGI. SJIIPS 2020, 9, 185-196.