BN Service japonais
NDL Authority File, 1991
Nihongo daijiten, ( Kōdansha karā ban, dai 2 han = The great Japanese dictionary,
second edition) / Umesao Tadao, Kindaichi Haruhiko (et al.), 1995
Nihongo dōshi no asupekuto / Kindaichi Haruhiko hen, 1976
日本語動詞のアスペクト / 金田一春彥編, 1976