The cambridge history of Japan; Volume 1 : ancient Japan
edited by Delmer M. Brown
Cambridge University Press, 1993
 Buku Referensi
The cambridge history of Japan; Volume 3 : medieval Japan
edited by Kozo Yamamura
Cambridge University Press, 1995
 Buku Referensi
Gilbert, Martin
A history of the twentieth century,volume one:1900-1933
Avon books, 1997
 Buku Teks
Chronology of twentieth-century history : business and commerce, volume one
edited by Frank N. Magill
Fitzroy Dearborn, 1996
 Buku Referensi
Chronology of twentieth-century history : business and commerce, volume two
edited by Frank N. Magill
Fitzroy Dearborn, 1996
 Buku Referensi