1948
Nihon koten no kenkyū
1953
Bungaku ni arawaretaru kokumin shisō no kenkyū
1932
Jōdai bungaku ni okeru shakaisei
1936
Bunka shijō hi okeru TLoyō no tokushitsu
1948
Dōka no shisō to sono tenkai
1936
Nihon bunka to Shina oyobi Chōsen no bunka tono koryū
1972
Nihon jōdaishi no kenkyū
1977
Bungaku ni arawaretaru waga kokumin shisō no kenkyū
1955
What is the Oriental culture? Translated by Yasotaro Morri