@unpublished{repository31277,
           title = {Pengajaran dan Pendidikan},
            note = {Unpublished},
       publisher = {UNIVERSITAS MUHAMMADIYAH PROF. DR. HAMKA},
             url = {http://repository.uhamka.ac.id/id/eprint/31277/},
          author = {Eko Digdoyo, Eko}
}