O's · S.O. · S S · Sung-Ock Sohn
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Integrated Korean: Beginning Level 1 Workbook (KLEAR Textbooks in Korean | 978-0-8248-2175-3 (0-8248-2175-0) | 2000 | Carol Schulz · KLEAR |
| Integrated Korean Workbook: Beginning 2 | 978-0-8248-2184-5 (0-8248-2184-X) | 2000 | Carol Schulz |