| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Successful Ageing | 978-0-19-551279-3 (0-19-551279-0) | 1999 |
| Successful Ageing | 978-0-19-553206-7 (0-19-553206-6) | 1992 |
Robert G. · Robert Gaensslen · Robert Gonsalves · Robert Gunkel · Robert Gunsalus · Roberto González · Roberto Gonzalo