Okinawasen "shūdan jiketsu" no nazo to shinjitsu

Japanese Army Air Force fighter aces, 1931-45

Japanese naval aces and fighter units in World War II

Chronological List of Political, Diplomatic and Military Leaders of the World, 1840-2000

Sōseki bungaku no moderutachi

Senreki to Kōkūtai shiwa

Nihon kanryōsei sōgō jiten, 1868-2000

Ianfu to senjo no sei (Shincho sensho)

Gendaishi no soten

Nihonjin horyo

Rokokyo Jiken no kenkyu