@unpublished{repository2336,
           title = {Presensi, BAP, Nilai Matematika Aktuaria 6B, 6C, 6D},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. HAMKA},
             url = {http://repository.uhamka.ac.id/id/eprint/2336/},
          author = {Leni Marlena, Leni}
}