@unpublished{repository37613,
           title = {Bukti Ajar Stat 4F},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof DR Hamka},
          author = {Wahidin, Wahidin},
             url = {http://repository.uhamka.ac.id/id/eprint/37613/}
}