@unpublished{repository10859,
       publisher = {Universitas Muhammadiyah Prof.Dr. Hamka},
           title = {BAP, Kehadiran Mahasiswa, dan Nilai},
            note = {Unpublished},
          author = {Ervin, Azhar},
             url = {http://repository.uhamka.ac.id/id/eprint/10859/}
}