Editions of Sphere

mass market paperback

English language

Published Jan. 12, 1988 by Ballantine Books.

Hardcover

English language

Published Jan. 12, 1989 by Random House Value Publishing.

mass market paperback

English language

Published Jan. 23, 1993 by Ballantine Books.

692 pages

English language

Published Nov. 23, 1989 by Ulverscroft.

Paperback

Spanish language

Published July 23, 1997 by Emece Editores.

audio cassette

English language

Published March 16, 1993 by Random House Audio.

544 pages

English language

Published Nov. 23, 2011 by HarperCollins Canada, Limited.

unknown binding

Published Sept. 23, 1995 by Perfection Learning Prebound.

Chinese language

Published Nov. 23, 1995 by Bo Yi.