Ikhsan, F., 		Kurnianto, F., 		Apriyanto, B., & 		Nurdin, E.
(2017).
 EFFORTS TO IMPROVE THE COMPETENCY OF PROFESSIONALISM TEACHER IN JEMBER REGENCY.
<em>Geosfera Indonesia, 1</em>(1), 16-21.
doi:10.19184/geosi.v1i1.6191