Owen, Oliver S., author
Prentice-Hall, 1998
Buku Teks
Greenland, David, author
Charles E. Merrill, 1983
Buku Teks
United States Information Agency, 1987
Buku Teks
Fincher, E. B., author
Abelard-Schuman, 1955
Buku Teks
Reischauer, Edwin O., author
Harvard University Press, 1950
Buku Teks