Editions of George's Secret Key to the Universe

304 pages

English language

Published 2011 by Simon & Schuster Children's Publishing.

French language

Published Sept. 4, 2008 by POCKET.

English language

Published 2014 by Random House Children's Books.

Published May 19, 2009 by Turtleback Books.

Published Feb. 1, 2008 by Nha Nam Hoi Nha Van/Tsai Fong Books.

Spanish language

Published 2022 by Penguin Random House Grupo Editorial.