@unpublished{repository23368,
            note = {Unpublished},
           title = {Experimental Design of Three Learning Methods in Economic Mathematics Course},
       booktitle = {The 2nd National Conference on Mathematics Education (NaCoME)},
             url = {http://repository.uhamka.ac.id/id/eprint/23368/},
          author = {Leni Marlena, Leni}
}