APA

Zeithaml V. A., Bitner M. J., . (2003). Services marketing: integrating customer focus across the firm. Boston: McGraw-Hill/Irwin.

Chicago

Zeithaml Valarie A, Bitner Mary Jo, . 2003. Services marketing: integrating customer focus across the firm. Boston: McGraw-Hill/Irwin.

Harvard

Zeithaml V. A., Bitner M. J., . (2003). Services marketing: integrating customer focus across the firm. Boston: McGraw-Hill/Irwin.

MLA

Zeithaml Valarie A, Bitner Mary Jo, . Services marketing: integrating customer focus across the firm. Boston: McGraw-Hill/Irwin. 2003.