Jien; Brown, Delmer Myers; Ishida, Ichirō (1979). The future and the past:. A Translation and Study of the Gukanshō, an Interpretative History of Japan Written in 1219 (em inglês). [S.l.]: University of California Press, pp. 331-332. ISBN9780520034600
Klaproth, Julius von (1834). Nipon o daï itsi ran:. Annales des empereurs du Japon (em francês). [S.l.]: Oriental Translation Fund, p. 195
Kodera, Takashi James (2013). Dogen's Formative Years:. An Historical and Annotated Translation of the Hokyo-ki (em inglês). [S.l.]: Routledge, p. 19. ISBN9781134543151
Dykstra, Yoshiko Kurata (1998). The Konjaku Tales:. From a Medieval Japanese Collection. Japanese section (em inglês). [S.l.]: Kansai Gaidai University Publication, pp. 360-362. ISBN9784873350219