@unpublished{repository34628,
           title = {Surat Tugas Pembicara UNU KALTIM},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
             url = {http://repository.uhamka.ac.id/id/eprint/34628/},
          author = {Arumsari, Imas}
}