Prest, Wilfrid R.
Oxford University Press , 1986
Buku Teks
Hibbert, Christopher, author
Guild Publ., 1987
Buku Teks
Trevelyan, George Macaulay, 1876-1962, author
Longmans, Green, 1950
Buku Teks
Plum, Werner
Friederich Ebert, 1974
Buku Teks
Mugglestone, Lynda, author
Clarendon Press, 1995
Buku Teks