@unpublished{repository7262,
            note = {Unpublished},
       booktitle = {International Conference on Natural and Social Science Education (ICNSSE)},
           title = {Materi presentasi konferensi internasional ICNSSE 2020},
             url = {http://repository.uhamka.ac.id/id/eprint/7262/},
          author = {Wijirahayu, Suciana}
}