@unpublished{repository3186,
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. DR HAMKA},
           title = {Surat Tugas Penelitian Vlog (PDF)},
             url = {http://repository.uhamka.ac.id/id/eprint/3186/},
          author = {Utari, Retno}
}