Fitzsimmons, J. A., & Fitzsimmons, M. J. (1994). Service Management for Competitive Advantage. Singapore: McGraw-Hill.
Chicago Style aipamenaFitzsimmons, James A., và Mona J. Fitzsimmons. Service Management for Competitive Advantage. Singapore: McGraw-Hill, 1994.
MLA aipamenaFitzsimmons, James A., và Mona J. Fitzsimmons. Service Management for Competitive Advantage. Singapore: McGraw-Hill, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.