| Author: | Pérez Galdós, Benito, 1843-1920 |
| Subject: | PQ, Epistolary fiction, Spanish fiction -- 19th century |
| Format: | Electronic text |
| Date issued: | 2017 |
| Language: | Spanish |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | La Incógnita [electronic resource] / Benito Pérez Galdós |