Jelaskan Catatan dari Keio

Ozaki, Yukio. (2001). The Autobiography of Ozaki Yukio: The Struggle for Constitutional Government in Japan. [Translated by Fujiko Hara]. Princeton: Princeton University Press. ; OCLC 45363447

Nussbaum, Louis Frédéric and Käthe Roth. (2005). Japan Encyclopedia. Cambridge: Harvard University Press. ; OCLC 48943301

Ponsonby-Fane, Richard A. B. (1956). Kyoto: The Old Capital of Japan, 794-1869. Kyoto: The Ponsonby Memorial Society. OCLC 559477127