"Portions of The Soul of a Butterfly draw on previously published material from Muhammad Ali: His Life and Times by Thomas Hauser © 1991 by Thomas Hauser and Muhammad Ali"--T.p. verso.
Standard print ed. originally published: London : Bantam, 2004.
The soul of a butterfly : reflections on life's journey by Muhammad Ali. ISBN 1405621036. Published by Thorndike in 2005. Publication and catalogue information, links to buy online and reader comments.