Rorty, Richard
Penguin Books, 1999
Buku Teks
Collier, John, 1884-1968, author
New American Library, 1947
Buku Teks
Hope, Anthony, author
Longmans, Green and Co., 1952
Koleksi Publik
Hope, A. D., author
Melbourne University Press, 1985.
Buku Teks
Hooton, Joy W., author
Oxford University Press , 1979
Buku Teks