edited by Ian Ousby
Cambridge University Press, 1993
Buku Referensi
edited by Peter Brooker and Andrew Thacker
Routledge, 2005
Buku Teks
Norton, 1967
Buku Teks
Mayhead, Robin
Cambridge University Press, 1974
Koleksi Publik
Collier, WIlliam Francis, author
Thomas Nelson and Son, 1920
Buku Teks