TY - UNPB UR - http://repository.uhamka.ac.id/id/eprint/4889/ Y1 - 2020/12// A1 - Oemar, Hamed A1 - Mansyur, Muchtaruddin PB - (mandiri) ID - repository4889 CY - Jakarta, Indonesia TI - Peer AV - public N1 - Unpublished ER -