Houghton Mifflin, 1985
Buku Teks
Major, J. Russel, author
J.B. Lippincott, 1966
Buku Teks
Takeo, Kuwabara, author
University of Tokyo Press , 1984
Buku Teks
Toynbee, Arnold J., author
Oxford University Press, 1948
Buku Teks
edited by John Louis Beatty, Oliver A. Johnson
Prentice-Hall, 1966
Buku Teks