@book{1951,
	author = {Armstrong, Gary and Kotler, Philip,},
	title = {Marketing :},
	publisher = {Pearson/Prentice Hall,},
	year = {c2003.},
	address = {Upper Saddle River, N.J. :},
	edition = {6tg ed},
	note = {Kotler's name appears first on the earlier ed}
}