@unpublished{repository37701,
            note = {Unpublished},
       publisher = {universitas muhammadiyah prof. dr. hamka},
           title = {bukti mengajar geometri non euclid},
             url = {http://repository.uhamka.ac.id/id/eprint/37701/},
          author = {Muntazhimah, Muntazhimah}
}