@book{29297,
	author = {Green, Paul E. and Tull, Donald S.,},
	title = {Research for marketing decisions},
	publisher = {Prentice-Hall},
	year = {1970},
	series = {Prentice-Hall international series in management},
	address = {Englewood Cliffs, N.J.},
	edition = {2d ed.}
}