La Troisième Fille
| Book | Third Girl |
| Format | Pocket book |
| Language | French |
| This Edition Published | 1977 |
| Original Title | Third Girl |
| Original Language | English |
| Author | Agatha Christie |
| Translated by | Claire Durivaux |
| Publisher | Club des Masques |
| Copyright Holder | Agatha Christie, Librairie des Champs-Élysées |
| Series | Hercule Poirot, Ariadne Oliver |
| Format | Pocket book |
| Language | French |
| This Edition Published | 1977 |
| Copyright | 1968 |
| Catalog Number | 112 |
| ISBN | 2702401007 |
| Notes | The Third Girl [printed on book] |