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Yenne, Bill (2014). The Imperial Japanese Army: The Invincible Years 1941–42. Oxford, United Kingdom: Osprey Publishing. ISBN 978-1-78200-932-0.
Lisalugemist
Swint, Kerwin (2011). The King Whisperers: Power Behind the Throne from Rasputin to Rove. New York: Union Square Press. lk 163–170. ISBN 978-1-4027-7201-6.
Edwin Palmer Hoyt (1993). Warlord: Tojo Against the World. Scarborough House. lk 195–201.
Ben Ami Shillony (1981). Politics and culture in wartime Japan. Oxford University Press. lk 62–63.
