@unpublished{repository38165,
           title = {Haidar Satrio Athorik},
       publisher = {universitas  muhammadiyah Prof. DR. HAMKA},
            note = {Unpublished},
             url = {http://repository.uhamka.ac.id/id/eprint/38165/},
          author = {Yulmaida Amir, Yulmaida}
}