@book{215893,
	author = {SOBEL  RUSSELL S. and JAMES GWARTNEY D. RICHARD L. STROUP, DAVID A. MACPHERSON},
	title = {UNDERSTANDING ECONOMICS},
	publisher = {CENGAGE},
	year = {2013},
	address = {NEW YORK},
	edition = {14TH ED.},
	note = {INCLUDES AN INDEX}
}