Woodgate, Gordon Kemble, author
Clarendon Press, 1989
Buku Teks
Wallis, T. E., author
Little, Brown, 1965
Buku Teks
edited by Eric A. Ash
Academic Press, 1980
Buku Teks
edited by Peter Gray
Van Nostrand Reinhold, 1973
Buku Referensi
Dean, Gordon, author
Alfred A. Knopf, 1957
Buku Teks