Editions of The Omen Machine

mass market paperback, 512 pages

Published July 31, 2012 by Tor Fantasy (July 31, 2012), Tor Fantasy.

Hardcover, 528 pages

Published Aug. 16, 2011 by Doubleday Canada.

leather bound, 528 pages

Published Aug. 16, 2011 by Tor Books.

Paperback, 504 pages

Published May 18, 2012 by BRAGELONNE.

English language

Published May 31, 2012 by Voyager.

Published May 31, 2011 by St. Martin's Press.

English language

Published May 31, 2011 by Doherty Associates, LLC, Tom.