@unpublished{repository48587,
            note = {Unpublished},
       publisher = {Penerbit Deepublish},
           title = {Sertifikat Penulis Buku Misteri Di Balik Pecahan dan Operasinya},
          author = {Soebagyo, Joko},
             url = {http://repository.uhamka.ac.id/id/eprint/48587/}
}