Taylor, George E.
Macmillan, 1942
Buku Teks
Taylor, George E.
Macmillan, 1942
Buku Teks
Baur, John I.H. (John Ireland Howe), 1909-1987
Graphic Society, 1957
Buku Teks
Emerson, Rupert
Mass Center for International Affairs Harvard University , 1964
Buku Teks
New York: W.W.Norton & Company, 1988,
Buku Referensi