Παραπομπή σε μορφή APA (7η εκδ.)

Zeithaml, V. A., Parasuraman, A., & Berry, L. L. (1990). Delivering quality service: Balancing customer perceptions and expectations. Free Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Zeithaml, Valarie A., A. Parasuraman, και Leonard L. Berry. Delivering Quality Service: Balancing Customer Perceptions and Expectations. New York: Free Press, 1990.

Παραπομπή σε μορφή MLA (8th εκδ.)

Zeithaml, Valarie A., et al. Delivering Quality Service: Balancing Customer Perceptions and Expectations. Free Press, 1990.