@unpublished{repository10402,
           title = {BAP,DKM,DNM Ilmu dan Teknologi Lingkungan},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
             url = {http://repository.uhamka.ac.id/id/eprint/10402/},
          author = {Rifky, Rifky}
}