@unpublished{repository18059,
           title = {Buku Ajar},
            note = {Unpublished},
       publisher = {UHAMKA},
            isbn = {978-602-425-287-8},
          author = {Supriansyah, Supriansyah},
             url = {http://repository.uhamka.ac.id/id/eprint/18059/}
}