"Yasashii Nihongo" hyōgen jitenIsao Iori, Reiko Shiga, Yukari Shimura, Mayumi Miyabe, Norie Oka · First published 2020Open the Tome
"Yasashii Nihongo" to tabunka kyōseiIsao Iori, Kazunari Iwata, Takuzō Satō, Naomi Yanagida · First published 2019Open the Tome
Nihongo kyōiku wa doko e mukau no kaHazuki Segawa, Kayoko Arita, Isao Iori, Takunori Terasawa · First published 2019Open the Tome
Nihongo kyōiku bunpō no tame no tayō na apurōchiAtsushi Mori, Isao Iori · First published 2011Open the Tome
