Παραπομπή σε μορφή APA (7η εκδ.)

Zeithaml, V. A. (2013). Services marketing: Integrating customer focus across the firm 7th ed. Mc GrawHill.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Zeithaml, Valarie A. Services Marketing: Integrating Customer Focus Across the Firm 7th Ed. Mc GrawHill, 2013.

Παραπομπή σε μορφή MLA (8th εκδ.)

Zeithaml, Valarie A. Services Marketing: Integrating Customer Focus Across the Firm 7th Ed. Mc GrawHill, 2013.