| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Directory of international environmental organisations | 978-975-7741-01-5 (975-7741-01-9) | 1991 | Ferzan Bayramoglu Yildirim |
| Glossary of environmental terms | 978-975-7741-02-2 (975-7741-02-7) | 1991 | |