Audio-Forum · Barrons Educational Series
| title | ISBN-13 | year of publication |
|---|---|---|
| Korean Basic Course Vol. 2 | 978-1-57970-313-4 | 1970 |
| Mastering Korean | 978-0-7641-3306-0 | 2005 |
| Mastering Korean CD#7 | 978-0-7641-8267-9 | 2005 |
| Mastering Korean CD Package | 978-0-7641-7882-5 | 2005 |