@unpublished{repository4404,
            note = {Unpublished},
           title = {sertifikat publikasi, halaman depan dan full artikel, hasil peer review, hasil turnitin.},
       publisher = {Universitas Muhammadiyah Prof. Dr. HAMKA},
             url = {http://repository.uhamka.ac.id/id/eprint/4404/},
          author = {MUSNIATI, NIA}
}