Coba jelasin Catatan dari Nagai Naoyuki dong

Beasley, W.G. (1955). Select Documents on Japanese Foreign Policy, 1853-1868. London: Oxford University Press. [reprinted by RoutledgeCurzon, London, 2001. 10-ISBN 0-19-713508-0; 13-ISBN 978-0-19-713508-2 (cloth)]