@book{141093,
	author = {Green, Paul E. and Tull, Donald S.,},
	title = {Research for marketing decisions /},
	publisher = {Prentice-Hall,},
	year = {1975.},
	series = {Prentice-Hall international series in management},
	address = {Englewood Cliffs, N.J. :},
	edition = {3d ed.}
}