Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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