@unpublished{repository6175,
           title = {Mekanika Kekuatan Material 3B},
            note = {Unpublished},
       publisher = {Fakultas Teknik Universitas Muhammadiyah Prof. Dr. Hamka},
             url = {http://repository.uhamka.ac.id/id/eprint/6175/},
          author = {Mugisidi, Dan}
}