@unpublished{repository39955,
           title = {Bukti Ajar MK Konsep Dasar IPS 1D},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
            note = {Unpublished},
             url = {http://repository.uhamka.ac.id/id/eprint/39955/},
          author = {Sulaeman, Sulaeman}
}