Snyder, Christopher. Microeconomics theory : basic principles and extensions / Christopher Snyder and Walter Nicholson. - Eleventh edition. - Australia : South-Western Cengage Learning, c2012. - xxi, 738 pages : illustration ; 25 cm. Includes index. ISBN: 9781111525514 LCCN: 2011928483 Subjects--Topical Terms: Microeconomics.