Webb, Herschel, author
Colombia University Press, 1957
Buku Teks
Yoshitake, Kiyohiko
Sage Publications, 1973
Buku Teks
Princeton University Press, 1979
Buku Teks
Hurlimann, Martin, author
Charles E. Tuttle, 1970
Buku Teks
University of Tokyo , 1968
Buku Teks