Nicolson, Harold
Oxford, 1969
Buku Teks
Kissinger, Henry, 1923-
Schuter, 1994
Buku Teks
Hansen, Allen C
Praeger, 1984
Buku Teks
Happold, F.C.
Christophers, 1938
Buku Klasik
Clark, C.M.H. (Charles Manning Hope), 1915-1991
Melbourne University Press, 1981
Buku Teks