Grolier, 1961
Buku Referensi
edited by Charles Moritz
H.W. Wilson, 1962
Buku Referensi
Reischauer, Edwin O., author
Stanford University Press, 1953
Buku Teks
Princeton University Press, 1979
Buku Teks
Hurlimann, Martin, author
Charles E. Tuttle, 1970
Buku Teks