@unpublished{repository38979,
           title = {Sertifikat HKI : Modul Praktikum Fisika Listrik Berbasis Problem Based Learning},
       publisher = {Uhamka},
            note = {Unpublished},
             url = {http://repository.uhamka.ac.id/id/eprint/38979/},
          author = {Sugianto, Sugianto}
}