@book{76213,
	author = {Corey, E. Raymond. and Harvard University.},
	title = {Problems in marketing},
	publisher = {McGraw-Hill},
	year = {c1981.},
	series = {McGraw-Hill series in marketing},
	address = {New York},
	edition = {6th ed.},
	note = {"Case materials of the Harvard Graduate School of Business Administration."}
}