Toynbee, Arnold J., author
Oxford University Press , 1957
Buku Teks
Brinton, Crane, 1898-1968, author
Prentice-Hall, 1960
Buku Teks
Myers, Bernard S., author
McGraw-Hill, 1967
Buku Teks
Toynbee, Arnold J., author
Oxford University Press, 1948
Buku Teks
Runciman, Steven
New York Meridian Books 1956
Buku Teks