@unpublished{repository41365,
            note = {Unpublished},
           title = {Surat Tugas dan Sertifikat Pelatihan MGMP Matematika Jakarta Timur 1},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
          author = {Soebagyo, Joko},
             url = {http://repository.uhamka.ac.id/id/eprint/41365/}
}