Παραπομπή σε μορφή APA (7η εκδ.)

Zeithaml Valarie A., Bitner Mary Jo, & Gremler Dwayne D. (2006). Services marketing: Integrating customer focus across the firm (4th ed.). McGraw-Hill.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Zeithaml Valarie A., Bitner Mary Jo, και Gremler Dwayne D. Services Marketing: Integrating Customer Focus Across the Firm. 4th ed. McGraw-Hill, 2006.

Παραπομπή σε μορφή MLA (8th εκδ.)

Zeithaml Valarie A., et al. Services Marketing: Integrating Customer Focus Across the Firm. 4th ed. McGraw-Hill, 2006.