@unpublished{repository53946,
           title = {SK Mengajar, BAP, DKM, DNM Analisis Kegagalan dan Mekanika Perpatahan 4F},
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
            note = {Unpublished},
             url = {http://repository.uhamka.ac.id/id/eprint/53946/},
          author = {Rifky, Rifky}
}