Expanded from the 1958 novella with the same name, as Robert Silverberg states in the Introduction to the 1978 Hamlyn edition
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| April 1963 |
|
The Silent Invaders / Battle on Venus | Ace Books | Omnibus | 5 |
| August 1973 |
|
The Silent Invaders | Ace Books | Novel | 1 |
| April 1975 |
|
Urania #669 | Mondadori | MAGAZINE | 3 |
| December 1975 |
|
The Silent Invaders | Dennis Dobson | Novel | |
| 1977 |
|
The Silent Invaders | Ace Books | Novel | 1 |
| October 1978 |
|
The Silent Invaders | Hamlyn Paperbacks | Novel | 7 |
| June 1983 |
|
Millemondiestate 1983: Tre romanzi completi di Robert Silverberg | Mondadori | Omnibus | 149 |
| October 1985 |
|
The Silent Invaders | Tor | Omnibus | 3 |
| September 2011 |
|
The Silent Invaders | Gateway / Orion | Novel | |
| June 2018 |
|
Robert Silverberg: The Ace Years, Part Three | Armchair Fiction | Omnibus | 270 |