APA-viite (7. p.)

Zeithaml, V. A., Bitner, M. J., & Gremler, D. D. (2013). Services marketing: Integrating customer focus across the firm (6th ed.). McGraw-Hill Irwin.

Chicago-viite (17. p.)

Zeithaml, Valarie A., Mary Jo Bitner, ja Dwayne D. Gremler. Services Marketing: Integrating Customer Focus Across the Firm. 6th ed. New York: McGraw-Hill Irwin, 2013.

MLA-viite (8. p.)

Zeithaml, Valarie A., et al. Services Marketing: Integrating Customer Focus Across the Firm. 6th ed. McGraw-Hill Irwin, 2013.