Yasuyuki Fujita

Chūbu Nihon, Nihongogaku kenkyū ronshū

Mori Ōgai shoki hon'yaku sakuhin no kokugo gakuteki kenkyū

Fukugō joshi no kenkyū

Gengo bunka no chūsei

Keishikigo kenkyū no genzai

Chūsei kokugo shiryōshū

In'yō kenkyū shiron

Keishikigo kenkyū ronshū