APA-referens

Zeithaml, V. A. B. (2014). Services Marketing: Integrating customer focus across the firm (6 edition.).

Chicago-stil citat

Zeithaml, Valarie A; Bitner. Services Marketing: Integrating Customer Focus Across the Firm. 6 edition. McGraw Hill education (India) Private Limited, New Delhi, 2014.

MLA-referens

Zeithaml, Valarie A; Bitner. Services Marketing: Integrating Customer Focus Across the Firm. 6 edition. 2014.