@book{146,
	author = {ZEITHAML, V. A.  and BITNER, M. J. & GREMLER, D. D. },
	title = {Services Marketing: Integrating Customer Focus Across the Firm. },
	publisher = {McGraw - Hill,},
	year = {2006.},
	address = {Boston,},
	edition = {4th Ed. }
}