B. B. ยท B. Bernardi
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Age, Class and Systems: Social Institutions and Polities Based on Age | 978-0-521-31482-4 (0-521-31482-8) | 2008 |
| Age Class Systems: Social Institutions and Polities Based on Age. | 978-0-521-30747-5 (0-521-30747-3) | 1985 |