Godin, Seth. Purple cow: transform your business by being remarkable / Seth Godin. - New York : Portfolio, 2003. - x, 145 p. : ill. ; 19 cm. Includes index. ISBN: 159184021X (alk. paper) LCCN: 2003046271 Subjects--Topical Terms: Marketing LC Class. No.: HF5415 / .G578 2003 Dewey Class. No.: 658.8