@book{148,
	author = {ZEITHAML, V. A. and BITNER, M. J. & GREMLER, D. D. },
	title = {Services Marketing: Integrating Customer Focus Across the Firm. },
	publisher = {McGraw - Hill,},
	year = {2013.},
	address = {New York, },
	edition = {6th Ed. }
}