Oxford University Press , 1996
Buku Teks
Taylor, Alan John Percivale, 1906-1990, author
Penguin Books in association with Hamish Hamilton, 1967
Buku Teks
Albrecht-Carrie, Rene, author
Littlefield, Adam & Co., 1959
Buku Teks
compiled by Jonathan French Scott and Alexander Baltzly
F.S. Crofts & Co., 1930
Buku Teks
Croce, Benedetto
Allen & Unwin, 1953
Buku Teks