McCulloch, John I. B.
New York The Foreign Policy Association 1940
Buku Teks
Lee, Joann Faung Jean
New Press, 1991
Buku Teks
Jordan, Winthrop D.
McDaugal, Littell, 1992
Buku Teks
Hsu, Francis L.K.
Cresset Press, 1955
Buku Teks
Bannon, John Francis
McGraw-Hill, 1952
Buku Teks