Editions of What If?

hardcover

Published Nov. 18, 2014 by imusti, John Murray Publishers Ltd.

taschenbuch, 368 pages

German language

Published Nov. 14, 2016 by Penguin Verlag.

269 pages

Spanish language

Published Jan. 7, 2002 by Aguilar, S. A. de Ediciones-Grupo Santillana.

Published Aug. 8, 2015 by Flammarion.

Paperback, 408 pages

Published Aug. 25, 2015 by Aguilar.

eBook

English language

Published Aug. 8, 2015 by unknown.

English language

Published Jan. 7, 2022 by STEMCOOL.

Published June 3, 2019 by UNIEBOEK | HET SPECTRUM.