Beasley, W.G.
University of California Press, 1999
Buku Teks SO
Charles E. Tutle Co.Inc, 1959,
Buku Referensi
Chamberlain, Sandra
Center for Basin Monetary and Economic Studies Economic Research Department Federal Reserve Bank of San Francisco , 1995
Buku Teks
The Japan Foundation, 1974
Buku Teks SO
Tanaka, Kakuei
The Simul Press, 1973
Buku Teks SO