コスモピア (kosumopia) · 学習研究社 (gakushuukenkyuusha)
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Hattashiki perapera hanguru kihon tango | 978-4-902091-84-7 (4-902091-84-4) | 2010 |
| The "to read! Over! Can speak!" Hangul drill in one week ISBN: 4054029280 | 978-4-05-402928-6 (4-05-402928-0) | 2005 |