@unpublished{repository31169,
       publisher = {Uhamka},
         journal = {ZHD\_AHMD\_BD7},
            note = {Unpublished},
           title = {ZHD\_AHMD\_BD7},
             url = {http://repository.uhamka.ac.id/id/eprint/31169/},
          author = {Zuhad, Ahmad}
}