Tempo de Mudança
| Book | A Time of Changes |
| Format | Paperback |
| Language | Portuguese |
| This Edition Published | 1985 |
| Author | Robert Silverberg |
| Translated by | Eurico da Fonseca |
| Cover Art by | António Pedro |
| Publisher | Livros Do Brasil |
| Publisher Series | Colecção Argonauta |
| Format | Paperback |
| Language | Portuguese |
| Location | Portugal |
| This Edition Published | 1985 |
| Series Number | 339 |