P., G., J., W., P., G.(1994).Marketing management : strategies and programs / Joseph P. Guiltinan, Gordon W. Paul (Ed.ke-5).New York:McGraw-Hill.
Gaya MLA
Guiltinan, Joseph, P.., Paul, Gordon, W.."Marketing management : strategies and programs / Joseph P. Guiltinan, Gordon W. Paul".Ed.ke-5New York:McGraw-Hill,1994.Skripsi.