The Enigma Variations
| First published | 1989 |
|---|---|
| Publisher | Ace Books |
| Format | Paperback |
| Type | Novel |
| Cover art | Oscar Chichoni |
| Pages | 234 |
| Price | $3.50 |
| ISBN | 0441180566 |
- "Ace edition/June 1989" [This Publication Record]
- First printing as per the number line: 10 9 8 7 6 5 4 3 2 1
- "Copyright © 1989 by John Maddox Roberts"
- "Cover art by Oscar Chichoni." on copyright page. Signature not found.
- "This book is an Ace original edition" on copyright page.
- Canada pricing C$4.75