Macaulay, Lord
Longmans, 1874
Koleksi Publik
Trevor-Roper, H.R.
New York Harper & Row 1957
Buku Teks
by George Orwell
Secker and Warburg, 1951
Buku Teks
Lichtheim, George
Routledge & Kegan Paul, 1964
Buku Teks
edited by Roy Harvey Pearce
Prentice-Hall, 1962
Buku Teks