Carter, Steven D. (2007). Householders:. The Reizei Family in Japanese History (em inglês). [S.l.]: Harvard University Asia Center, p.68. ISBN9780674024533
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
Fujiwara, Tadahira (2008). Teishinkōki:. The Year 939 in the Journal of Regent Fujiwara No Tadahira (em inglês). [S.l.]: East Asia Program, Cornell University, p. 52. ISBN9781933947402
Nojima Jusaburō (1994). Kuge jinmei daijiten (em japonês). [S.l.]: Nitsugai Asoshiētsu, p. 279
Lady Nijo's Own Story:. The Candid Diary of a Thirteenth-Century Japanese Imperial Concubine (em inglês). [S.l.]: Tuttle Publishing, p. 31. 1999. ISBN9781462912193