| title | ISBN-13 | year of publication |
|---|---|---|
| 1nichi 1pun ressun TOEIC test | 978-4-396-31426-2 | 2007 |
| 1nichi 1pun ressun TOEIC test eitango koredake | 978-4-396-31414-9 | 2006 |
| TOEIC Test = Ichinichi ippun ressun shin toikku tesuto senbon nokku | 978-4-396-31450-7 | 2008 |
| TOEIC Test = Ichinichi Ippun Ressun Toikku Tesuto: Pawa Atsupuhen | 978-4-396-31395-1 | 2006 |