@unpublished{repository26810,
           title = {Surat Tugas Narasumber Diklat Peningkatan Kompetensi Guru SMK Moda Daring Matematika SMK},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
            note = {Unpublished},
             url = {http://repository.uhamka.ac.id/id/eprint/26810/},
          author = {Soebagyo, Joko}
}