O`Connor, Mark, author
Hale & Iremonger, 1989
Buku Teks
Thorp, Roderick
Random House, 1961
Buku Teks
Rutherfurd, Edward, author
Ballantine Books, 2000
Buku Teks
Turnbull, Colin M., author
Simon and Schuster, 1962
Buku Teks
Turner, Victor
Cornell University Press, 1967
Buku Teks