@unpublished{repository31383,
           title = {pengembangan pembelajaran ipa (5i)},
       publisher = {Universitas Muhammadiyah Prof.DR.HAMKA},
            note = {Unpublished},
             url = {http://repository.uhamka.ac.id/id/eprint/31383/},
          author = {Zulherman, Zulherman}
}