@unpublished{repository6405,
           title = {Laporan Penelitian M. Mujirudin},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah PROF. DR. HAMKA},
             url = {http://repository.uhamka.ac.id/id/eprint/6405/},
          author = {Mujirudin, Mohammad}
}