Coba jelasin Catatan dari Makino Nobuaki dong

Agawa, Hiroyuki. The Reluctant Admiral: Yamamoto and the Imperial Navy. Kodansha International (2000).

Beasley, W. G. Japanese Imperialism 1894–1945. Oxford University Press.

Makino, Nobuaki. Makino Nobuaki nikki. Chūō Kōronsha (1990).  (Japanese)