@unpublished{repository26730,
           title = {4.8. Bukti Kenerja Sebagai Revier Jurnal Tadris Matematika (JTMT)},
            note = {Unpublished},
       publisher = {Universita Muhammadiyah Prof.Dr. Hamka},
             url = {http://repository.uhamka.ac.id/id/eprint/26730/},
          author = {Ervin, Azhar}
}