Kokuritsu Kokugo Kenkyūjo (Japan)

• Gengo kōdō ni okeru "hairyo" no shosō
• Nihongo kyōiku no arata na bunmyaku
• Nihongo to Porutogarugo
• Nihongo to Supeingo
• Sekai no "gairaigo" no shosō
• Taishō kenkyū to Nihongo kyōiku
• Yutaka na gengo seikatsu no tame ni
• Yutaka na gengo seikatsu no tame ni
• "Kokugoryoku kan" ni kansuru zenkoku chōsa
• 2003-yŏndo Ilbonŏ kyoyuk haksŭp hwanʼgyŏng kwa haksŭp sudan e kwanhan chosa yŏnʼgu
• An introduction to the National Institute for Japanese Language
• An introduction to the National Institute for Japanese Language