@unpublished{repository50188,
           title = {SK-BAP-ABSEN-NILAI-SOSIO-INFORMATIKA},
       publisher = {Universitas Muhammadiyah Prof DR HAMKA},
            note = {Unpublished},
             url = {http://repository.uhamka.ac.id/id/eprint/50188/},
          author = {Alim, Endy}
}