Trevelyan, George Macaulay, 1876-1962, author
Penguin Books, 1979
Buku Teks
Thomas, David, author
Penguin Books, 1963
Buku Teks
edited by Stanley J. Kunitz, Howard Haycraft
Wilson, 1936
Buku Referensi
edited by M.A.R. Habib
Cambridge University Press, 2013
Buku Teks
Thomson, David
Penguin Books, 1951
Buku Teks