T/K · Tadashi Kawashima · Tadeusz Kowzan · Tetsu Kusum
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Ano enzetsu wa naze hito o ugokashitanoka | 978-4-569-77375-9 (4-569-77375-3) | 2009 |
| Jibun no kotoba de kataru gijutsu: Guttokuru kakikata to hanashikata 58 no kotsu | 978-4-8443-7129-8 (4-8443-7129-0) | 2011 |
| Strongest speech art of dictator ISBN: 4061385178 | 978-4-06-138517-7 (4-06-138517-8) | 2012 |
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