edited by Albert C. Baugh
Appleton-Century-Crofts, 1948.
Buku Teks
Trevelyan, George Macaulay, 1876-1962, author
Longmans, Green, 1945
Buku Teks
Griffin, Dustin, author
Cambridge University Press, 2009
eBooks
Chesterton, G. K. (Gilbert Keith), 1874-1936, author
Chatto , 1951
Buku Teks
Stephen, Sir James Fitzjames, author
Routledge/Thoemmes Press, 1996
Buku Teks