Hardcover 2015 Year Orbit (US) Publisher ISBN-13: 978-0-316-21224-3 ISBN-10: 0-316-21224-5 Buy on Amazon
Paperback 2016 Year Orbit (US) Publisher ISBN-13: 978-0-316-21225-0 ISBN-10: 0-316-21225-3 Buy on Amazon
Digital Books 2015 Year Orbit Publisher ISBN-13: 978-1-4055-1560-3 ISBN-10: 1-4055-1560-0 Not Available for Purchase