Title-page imprint: London.
'English translation based on the "Newsweek" edition. [New York: Newsweek, 1968]' - Title-page verso. - Originally published in Italian, Milano: Mondadori, 1968.
Pinakothek, Munich. ISBN 0600793087. Published by Paul Hamlyn in 1970. Publication and catalogue information, links to buy online and reader comments.