Wood, Anthony, 1923-
Longman, 1983
Buku Teks SO
Taylor, Alan John Percivale, 1906-1990
Penguin Books in association with Hamish Hamilton, 1967
Buku Teks SO
edited by T.C.W. Blanning
Oxford University Press, 1996
Buku Teks SO
Anderson, M.S.
Longman, 1971
Buku Teks SO
Black, C.E.
Alfred A. Knopf, 1966
Buku Teks SO