Hakuhōdō. Seikatsu Sōgō Kenkyūjo

• "Bunshū" no tanjō
• "Hanbun dake" kazoku
• 90-nendai kazoku
• German-English and English-German vest-pocket dictionary
• Hakuhōdō Seikatsu sōken no kirā dēta de kataru riaru Heiseishi
• Kō-shinguru shakai
• Nihonjin no jishin
• Taun wotchingu