| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| A Grammar of Gatha-Avestan | 978-90-04-08332-5 | 1988 | Robert Beekes |
| Comparative Indo-European Linguistics: An Introduction | 978-90-272-2151-3 | 1996 | |
| Comparative Indo-European Linguistics: An Introduction | 978-90-272-2150-6 | 1995 | |
| De Etrusken spreken | 978-90-6283-797-7 | 1991 | |
R. B · R. P. · R. S. · Robert S.P. Beekes · S. B · S P
Brill · Coutinho · John Benjamins Publishing Company