@unpublished{repository46949,
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
            note = {Unpublished},
           title = {Sertifikat HKI Dampak Pemanasan Global bagi Ekonomi},
             url = {http://repository.uhamka.ac.id/id/eprint/46949/},
          author = {Handayani, Sri Lestari}
}