Eto, Jun
International Society for Educationa Information, 1974
Buku Teks
Beasley, W.G
University of California Press , 1999
Buku Teks
Reischauer, Edwin O., author
Tuttle, 1972
Buku Teks
Reischauer, Edwin O., author
Charles E. Tuttle Company, 1990, 1992
Buku Teks
Reischauer, Edwin O., author
Knopt, 1970
Buku Teks