Ensaio Sobre A Origem Das Línguas
| Publisher | Editorial Estampa |
| Translated by | Fernando Guerreiro |
| Introduction by | Fernando Guerreiro |
| Notes by | Fernando Guerreiro |
| Cover/Jacket Design by | José Antunes |
| Series | Clássicos de Bolso |
| Printed by | Rolo & Filhos - Artes Gráficas, Lda |
| Format | Paperback |
| Language | Portuguese |
| Location | Lisbon |
| This Edition Published | 2001 |
| Pages / Font | 163 pages |
| ISBN | 972-33-1660-9 |
| DL (Portuguese) | 169561/01 |
| Barcode | 9789723316605 |
| Series Number | 52 |
| Edition No. | 2.ª |
Added by Xavier.Rafael