Raymond Smullyan ; introduction by Martin Gardner ; illustrations by Greer Fitting

Dover c1982

: pbk

Available at 2 libraries

Raymond Smullyan ; with an introduction by Martin Gardner ; illustrated by Greer Fitting

Penguin Books 1984

: pbk

Available at 1 libraries

Raymond M. Smullyan ; with an introduction by Martin Gardner ; illustrated by Greer Fitting

W. Morrow 1982

Available at 1 libraries