@book{2544,
	author = {McConnell, Campbell R.},
	title = {Economics: principles, problems, and policies},
	publisher = {McGraw-Hill},
	year = {[1975]},
	address = {New York,},
	edition = {6th ed.},
	note = {First ed. published in 1960 under title: Elementary economics: principles, problems, and policies.}
}