Services marketing : integrating customer focus across the firm / Valarie A. Zeithaml ; Mary Jo Bitner. (2006). New York, NY: McGraw-Hill, c.
Services marketing : integrating customer focus across the firm / Valarie A. Zeithaml ; Mary Jo Bitner. 3rd ed.. New York, NY: McGraw-Hill, c, 2006. Buku Wajib.