@unpublished{repository17815,
            year = {2021},
            note = {Unpublished},
           title = {Sertifikat Keislaman dan Science},
       publisher = {Universitas Muhammadiyah Prof. Dr. HAMKA},
          author = {Agus Rahmadi, Agus},
             url = {http://repository.uhamka.ac.id/id/eprint/17815/}
}