@unpublished{repository43883,
           title = {HKI Video Pembelajaran "Dampak Pemanasan Global bagi Ekonomi"},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
             url = {http://repository.uhamka.ac.id/id/eprint/43883/},
          author = {Utami, Novelia}
}