@unpublished{repository11587,
           title = {Omega WD dengan sampul},
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
            note = {Unpublished},
          author = {Laksanawati, Wahyu Dian},
             url = {http://repository.uhamka.ac.id/id/eprint/11587/}
}