@unpublished{repository19681,
           title = {SK Dekan, DN, DH, BAP Statistik 3E},
       publisher = {universitas  muhammadiyah Prof. DR. HAMKA},
            note = {Unpublished},
             url = {http://repository.uhamka.ac.id/id/eprint/19681/},
          author = {TRESNAWATY, YULISTIN}
}