@unpublished{UNY2483,
          author = {Murtinah Siti},
           title = {OPTIMASI SISTEM ANTRIAN TELLER BRI CIK DITIRO BERDASARKAN MODEL TINGKAT ASPIRASI},
          school = {UNY},
            year = {2007},
             url = {http://eprints.uny.ac.id/2483/}
}