http://repository.uhamka.ac.id/id/eprint/13045/ Proposal Penelitian Bacth 1 _BDH 2021-ttd nov 2021 Bambang, Dwi Hartono http://repository.uhamka.ac.id/id/eprint/13045/1/Proposal%20Penelitian%20Bacth%201%20_BDH%202021-ttd%20nov%202021.pdf Unduh!