@unpublished{repository50435,
           title = {Sertifikat Sebagai Panitia Seminar},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. HAMKA},
          author = {Sri Mulyani, Sri Mulyani},
             url = {http://repository.uhamka.ac.id/id/eprint/50435/}
}