@unpublished{repository10940,
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
           title = {Artikel Terbit di Jurnal Gravity},
             url = {http://repository.uhamka.ac.id/id/eprint/10940/},
          author = {Wahyu Dian, Laksanawati}
}