@book{5274,
	author = {Gould, John P., and Lazear, Edward P.},
	title = {Microeconomic theory /},
	publisher = {Irwin,},
	year = {1989.[reprinted 1993]},
	series = {Irwin publications in economics},
	address = {Homewood, IL ;},
	edition = {6th ed.}
}