Sobel, Russell S. Understanding macroeconomics / Russell S. Sobel ... [et al.]. - 13th ed. - Australia : Mason, OH : South-Western Cengage Learning, c2011. - xxvii, 585 p. : ill., maps. ; ISBN: 9780538756204 LCCN: Subjects--Topical Terms: Macroeconomics LC Class. No.: HB171.5 / .G963 2011