The Invincible
| Book | Niezwyciężony (novel) |
| Publisher | Penguin Books Ltd |
| Translated by | Wendayne Ackerman |
| Copyright Holder | Stanisław Lem |
| Cover Art by | Peter Tybus |
| Printed by | Hunt Barnard Printing Ltd |
| Format | Paperback |
| Language | English |
| Location | UK |
| Copyright | 1973 |
| This Edition Published | 1976 |
| Pages / Font | 186 pages |
| ISBN | 0 14 00.3853 1 |
| Price | UK 50p / New Zealand $1.70 / Canada $1.50 |
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