Hardcover 1977 Year Gollancz Publisher ISBN-13: 978-0-575-02286-7 ISBN-10: 0-575-02286-8 Buy on Amazon
Paperback 2004 Year Perennial / HarperCollins Publisher ISBN-13: 978-0-06-076343-5 ISBN-10: 0-06-076343-4 Buy on Amazon
Digital Books 2017 Year Gateway / Orion Publisher ISBN-13: 978-1-4732-0590-1 ISBN-10: 1-4732-0590-5 Not Available for Purchase