@unpublished{repository4103,
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
           title = {SURAT PENCATATAN CIPTAAN},
            note = {Unpublished},
          author = {Titik Haryati, Dr. Titik Haryati{,} M. Pd},
             url = {http://repository.uhamka.ac.id/id/eprint/4103/}
}