Editions of Sphere

Hardcover, 416 pages

English language

Published Sept. 3, 1987 by Humanity Press/prometheus Bk.

mass market paperback

English language

Published Jan. 7, 1993 by Ballantine Books.

Paperback

Published Jan. 1, 2003 by Rowohlt TB-V. Rnb..

audio cassette

English language

Published March 16, 1993 by Random House Audio.

544 pages

English language

Published Nov. 7, 2011 by HarperCollins Canada, Limited.

692 pages

English language

Published Nov. 7, 1989 by Ulverscroft.

Paperback

Spanish language

Published July 7, 1997 by Emece Editores.

unknown binding

Published Sept. 7, 1995 by Perfection Learning Prebound.

Chinese language

Published Nov. 7, 1995 by Bo Yi.