APA

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

Chicago

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

Harvard

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

MLA

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