http://repository.unmul.ac.id/handle/123456789/56888 BUKU Sun, 19 Jul 2026 12:55:11 GMT 2026-07-19T12:55:11Z https://repository.unmul.ac.id:443/bitstream/id/16457c63-14b6-4eb9-9681-a18b7ceb0d92/ http://repository.unmul.ac.id/handle/123456789/56888