@unpublished{repository3875,
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
           title = {Laporan Hasil Penelitian},
            note = {Unpublished},
          author = {M.Nurrasyidin, Nurrasyidin},
             url = {http://repository.uhamka.ac.id/id/eprint/3875/}
}