Toshiaki Yasuda

1968

• Kindai Nihon gengoshi saikō
• "Gengo" no kōchiku
• "Kokugo" no kindaishi
• "Kokugo" to "hōgen" no aida
• "Tagengo shakai" to iu gensō
• "Teniha Doitsugo" to iu mondai
• Datsu "Nihongo" e no shiza
• Jisho no seijigaku
• Kanji haishi no shisōshi
• Karera no Nihongo
• Kindaichi Kyōsuke to Nihongo no kindai
• Kokubungaku no jikū