| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Russian: Stage One | 978-5-200-00285-6 (5-200-00285-0) | 1988 | G. Bitekhtina · Dan E. Davidson · T. Dorofeyeva |
| Russian: Stage one | 978-5-200-00286-3 (5-200-00286-9) | 1988 | G. Bitekhtina · D. Davidson · T. Dorofeyeva |