Ing. Stanislav Sojak · S S · S. Sojak
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Map of Czech Grammar | 978-80-85836-13-4 (80-85836-13-0) | 1995 | Christopher Guilds · Petr Herzig |
| Map of English Grammar | 978-80-85836-51-6 (80-85836-51-3) | 1996 | Gary Crabbe |