Ace Books PB First Printing (1979), Edition: 1st, Paperback
London : W.H. Allen, 1981.
pp. 408. G. P. Putnam's Sons: New York, 1961.
Del Rey (1983), Mass Market Paperback, 368 pages
Orbit (1992), Paperback, 699 pages
Orbit (1993), Paperback, 1046 pages
Orbit (1994), Paperback, 928 pages
Zelhem Arboris cop. 1988
Zelhem : Arboris; 47 p, 30 cm; http://opc4.kb.nl/DB=1/PPN?PPN=237135930
Rotterdam : Yendor; 49 p, 29 cm; http://opc4.kb.nl/DB=1/PPN?PPN=843285656