Kōtarō Takamura, Hiroaki Sato: A Brief History of Imbecility. Poetry and Prose of Takamura Kōtarō. University of Hawaii Press, Honolulu 1992, ISBN 0-8248-1456-8, S.253 (books.google.com – Leseprobe, keine Vorschau der Seite).
Oliver Leaman: Friendship East and West. Philosophical Perspectives. Curzon Press, Richmond 1996, ISBN 0-7007-0358-6, S.74 (books.google.com).
American Chamber of Commerce in Japan (Hrsg.): The Journal of the American Chamber of Commerce in Japan – Jānaru. ACCJ, 2006, S.54 (books.google.com – Nur Snippetansicht).
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Reinhard Drifte: Japan’s Security Relations with China since 1989. From Balancing to Bandwagoning? Taylor & Francis, 2002, ISBN 0-203-98654-7, S.7 (books.google.com – Leseprobe, keine Vorschau der Seite).
