@unpublished{repository43133,
            note = {Unpublished},
           title = {Perangkat Pembelajaran Matematika Dasar},
       publisher = {Universitas Muhammadiyah Prof DR Hamka},
             url = {http://repository.uhamka.ac.id/id/eprint/43133/},
          author = {Wahidin, M. Pd.}
}