@unpublished{repository37479,
           title = {Bukti Ajar Mata Kuliah 6B Konstruktivisme Pemb. Sejarah},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
            note = {Unpublished},
             url = {http://repository.uhamka.ac.id/id/eprint/37479/},
          author = {Bandarsyah, Desvian}
}