- HTML (2 pages, indexed, 128-137 KB) at Bartleby.com (Translator unknown)
- Italian Multi-Format (PDF, zipped RTF and zipped text) at Liber Liber (Translated by Michele Battaglia)
- Latin Multi-format (HTML, EPUB, Kindle, Text) at Project Gutenberg
- Multi-format (HTML, EPUB, Kindle, Text) at Project Gutenberg; includes both On Friendship and On Old Age (Translated by E.S. Shuckburgh)
Available at Amazon.com:
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- Latin/English Hardcover edition, translation by W.A. Falconer - On Old Age (De Senectute). On Friendship (De Amicitia). On Divination (De Divinatione) (Harvard Univ Pr, 1970, 580 pg).
- Paperback edition, edited by Charles Bennett (Bolchazy Carducci, 1990, 326 pg).
All links verified on or after July 12, 2019