APA

Zeithaml V., Bitner M., . (2003). Services Marketing.Integrating Customer Focus Across the Firm. Boston: McGraw-Hill. Irwin.

Chicago

Zeithaml V.A, Bitner M.J, . 2003. Services Marketing.Integrating Customer Focus Across the Firm. Boston: McGraw-Hill. Irwin.

Harvard

Zeithaml V., Bitner M., . (2003). Services Marketing.Integrating Customer Focus Across the Firm. Boston: McGraw-Hill. Irwin.

MLA

Zeithaml V.A, Bitner M.J, . Services Marketing.Integrating Customer Focus Across the Firm. Boston: McGraw-Hill. Irwin. 2003.