Editions of George and the Unbreakable Code

Paperback, 313 pages

English language

Published Aug. 24, 2016 by Simon & Schuster, Simon & Schuster Books for Young Readers.

Paperback, 306 pages

English language

Published Aug. 24, 2014 by Doubleday.

Hardcover, 391 pages

Polish language

Published Aug. 24, 2020 by Zysk i s-ka.

Paperback

Published March 31, 2015 by Random House Children's Publishers UK.

352 pages

English language

Published Aug. 24, 2014 by Random House Children's Books.

English language

Published Aug. 24, 2014 by Random House Children's Books.