@unpublished{repository13708,
       publisher = {UHAMKA},
           title = {Peer Review Buku Modul Pembelajaran Kalkulus Peubah Banyak},
            note = {Unpublished},
          author = {Soebagyo, Joko},
             url = {http://repository.uhamka.ac.id/id/eprint/13708/}
}