@unpublished{repository9209,
         journal = {Analysis of reduction of COD (Chemical Oxygen Demand) levels in tofu  waste using activated sludge method},
           title = {artikel marocco},
            note = {Unpublished},
          author = {Wati Sukmawati, Wati},
             url = {http://repository.uhamka.ac.id/id/eprint/9209/}
}