Gaya APA

ZEITHAML, Valarie A., A. Parasuraman, Leonard L. Berry. (1990). Delivering Quality Service: Balancing Customer Perseptions and Expectations . United States of America: The Free Press.

Gaya Chicago

ZEITHAML, Valarie A., A. Parasuraman, Leonard L. Berry. Delivering Quality Service: Balancing Customer Perseptions and Expectations. United States of America: The Free Press, 1990. Text.

Gaya MLA

ZEITHAML, Valarie A., A. Parasuraman, Leonard L. Berry. Delivering Quality Service: Balancing Customer Perseptions and Expectations. United States of America: The Free Press, 1990. Text.

Gaya Turabian

ZEITHAML, Valarie A., A. Parasuraman, Leonard L. Berry. Delivering Quality Service: Balancing Customer Perseptions and Expectations. United States of America: The Free Press, 1990. Print.