@unpublished{repository50529,
       publisher = {UNIVERSITAS MUHAMMADIYAH PROF. DR. HAMKA},
           title = {5C PPKN},
            note = {Unpublished},
             url = {http://repository.uhamka.ac.id/id/eprint/50529/},
          author = {Eko Digdoyo, Eko}
}