@unpublished{repository43945,
           title = {Sertifikat Narasumber MGMP Matematika SMP Kota Depok},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
          author = {Soebagyo, Joko},
             url = {http://repository.uhamka.ac.id/id/eprint/43945/}
}