@phdthesis{UNY2188,
          author = {- Setiani},
           title = {PENENTUAN HARGA OPSI SAHAM TIPE AMERIKA DENGAN MENGGUNAKAN MODEL BINOMIAL},
           month = {November},
            year = {2011},
          school = {UNY},
             url = {http://eprints.uny.ac.id/2188/}
}