@unpublished{repository40448,
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
           title = {Chujokyuu Choukai 4A},
             url = {http://repository.uhamka.ac.id/id/eprint/40448/},
          author = {Natalia, Ana}
}