O Signo
| Publisher | Editorial Presença |
| Co-publisher | Livraria Martins Fontes |
| Translated by | Maria de Fátima Marinho |
| Revised by | Wanda Ramos |
| Cover/Jacket Design by | F. C. |
| Copyright Holder (Original Edition) | Istituto Editoriale Internazionale |
| Series | Biblioteca de Ciências Humanas |
| Printed by | Oficinas Gráficas de Rios & Irmão, Lda |
| Format | Soft cover |
| Language | Portuguese |
| Location | Lisbon, Portugal |
| Printed | 1977 |
| Pages / Font | 247 pages |
| Series Number | 61 |
Added by Xavier.Rafael