Ibunkakan kyōiku no furontiaGun'ei Satō, Masahiro Yokota, Tsuyoshi Tsuboi · First published 2016Open the Tome
Daigaku no kokusaika to Nihonjin gakusei no kokusai shikōseiMasahiro Yokota, Akira Kobayashi · First published 2013Open the Tome
Gaikokujin gakusei no Nihon ryūgaku e no nīzu ni kansuru chōsa kenkyūMasahiro Yokota · First published 2009Open the Tome
