@unpublished{repository10922,
           title = {Bukti Mengajar Managemen Data 4B Semester Genap 2021},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. HAMKA"},
             url = {http://repository.uhamka.ac.id/id/eprint/10922/},
          author = {Retno Mardhiati A, RMI}
}