@unpublished{repository31332,
            year = {2018},
       publisher = {Universitas Muhammadiyah Prof. DR. Hamka},
            note = {Unpublished},
           title = {Piagam 15 tahun Pengabdian},
           month = {December},
             url = {http://repository.uhamka.ac.id/id/eprint/31332/},
          author = {Utari, Retno}
}