@unpublished{repository4042,
           title = {BUKU ABK},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
             url = {http://repository.uhamka.ac.id/id/eprint/4042/},
          author = {Titik Haryati, Dr. Titik Haryati{,} M. Pd}
}