Editions
UK: Jonathan Cape, Ltd. (1980) First UK edition. 220 pp., hardcover.
US: Summit Books/Simon & Schuster (1980) First US edition. 220 pp., hardcover.
US: Picador (1982) 214 pp., paperback.
US: Washington Square Press (1982) 220 pp., paperback.
US: Indiana University Press (1998) "Expanded Edition." 256 pp., paperback. Includes an afterword by Hoban; excerpts from a considerably different early draft of the novel; a brief glossary; black & white reproduction of The Legend of St. Eustace; and two sketches of Punch by Hoban.
UK: Bloomsbury (2002) 256 pp., paperback. Same as Expanded Edition plus an introduction by Will Self.
UK: Gollancz (2012) "SF Masterworks" series. 256 pp., hardcover. Same as Expanded Edition plus introduction by Adam Roberts and additional afterword by David Mitchell.
E-books
Waterstones.com (EPUB DRM)—same content as Bloomsbury edition
Amazon.co.uk (Kindle)—same content as Bloomsbury edition
Translations
In Catalan: Dudo Errante. Spain: Editorial Berenice, 2005. Translation by David Cruz and María Luisa Pascual. Introductions by Javier Fernández, Russell Hoban, and the translators.