Sixth Edition
0-393-97515-0 • cloth • 2005
Fifth Edition
0-393-097060-4 • paper • 1997
Second Edition
0-393-96544-9 • paper • 1994
Second Edition
0-393-97745-5 • cloth • 2002
ISBN-10: 0-393-92638-9 • ISBN-13: 978-0-393-92638-5 • cloth • 2008
© 2005, W. W. Norton & Company