Badeau, John S., author
Foreign Policy Ass., 1943
Buku Teks SO
Frankfort, Henri, author
Doubleday, 1948
Buku Teks
Toynbee, Arnold J., author
Oxford University Press, 1958
Buku Teks
Roma : Istituto Iataliano per IlMedio ed Estremo Oriente
Majalah, Jurnal, Buletin
Leick, Gwendolyn, author
Routledge, 1999
Buku Teks