Avery · Greenwood Press · Prometheus Books
| title | ISBN-13 | year of publica- tion |
|---|---|---|
| A bridge to the stars: Our ancient cosmic legacy | 978-0-89529-004-5 | 1977 |
| Antisthenes of Athens: Setting the World Aright | 978-0-313-31672-2 | 2001 |
| Classical Cynicism: A Critical Study | 978-0-313-30015-8 | 1996 |
| Diogenes of Sinope: The Man in the Tub | 978-0-313-30672-3 | 1998 |
| Diogenes The Cynic: The War Against The World | 978-1-59102-320-3 | 2005 |
| Socrates: A Life Examined | 978-1-59102-501-6 | 2007 |