Haruo Erikawa

Nihon no gaikokugo kyōiku seis

Nihon no gaikokugo kyōiku seisakushi

2018

Eigo to Nihongun

Eigo to Nihongun

2016

Eigo kyōkasho wa "sensō" o dō

Eigo kyōkasho wa "sensō" o dō oshiete kita ka

2015

Eigo kyōiku, semarikuru hatan

Eigo kyōiku, semarikuru hatan

2013

Juken Eigo to Nihonjin

Juken Eigo to Nihonjin

2011

Nihonjin wa Eigo o dō manande

Nihonjin wa Eigo o dō manande kita ka

2008

Kindai Nihon no Eigoka kyōikushi

2006