Παραπομπή σε μορφή APA (7η εκδ.)

Zeithaml, V. A., Bitner, M. J., & Gremler, D. D. (2009). Services marketing: Integrating customer focus across the firm (5th ed.). McGraw-Hill Irwin.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Zeithaml, Valarie A., Mary Jo Bitner, και Dwayne D. Gremler. Services Marketing: Integrating Customer Focus Across the Firm. 5th ed. Boston: McGraw-Hill Irwin, 2009.

Παραπομπή σε μορφή MLA (9th εκδ.)

Zeithaml, Valarie A., et al. Services Marketing: Integrating Customer Focus Across the Firm. 5th ed. McGraw-Hill Irwin, 2009.