Etexts:
- Multi-format (HTML, EPUB, Kindle, Text) at Project Gutenberg (Translated by James Waring)
- Multi-format (PDF, Kindle, EPUB) at Freeditorial
- French PDF (Link page) at Freeditorial
- Spanish PDF (Link page) at Biblioteca Virtual Universal
Available at Amazon.com:
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- Hardcover edition, translated by James Waring (Palala Press, 2016).
All links verified on or after October 19, 2020