APA ציטוט

 Zeithaml, V. A. (2016).  Services marketing: Integrating customer focus across the firm.  McGraw-Hill Education.

Trích dẫn kiểu Chicago

 Zeithaml, Valarie A.  Services Marketing: Integrating Customer Focus Across the Firm.  McGraw-Hill Education, 2016.

ציטוט MLA

 Zeithaml, Valarie A.  Services Marketing: Integrating Customer Focus Across the Firm.  McGraw-Hill Education, 2016.