@unpublished{repository5512,
           title = {Document IJCP},
            year = {2020},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
             url = {http://repository.uhamka.ac.id/id/eprint/5512/},
          author = {Wulandari, Nora}
}