Gwynn, Stephen, author
Macmillan, 1950
Buku Teks
McKillop, Alan Dugald, author
University of Kansas Press, 1956
Buku Teks
Turville-Petre, Thorlac, author
Blackwell Publishing, 2007
Buku Teks
Otis, William Bradley, author
Barnes & Noble, 1939
Koleksi Publik
Needleman, Morris H., author
Barnes & Noble, 1939
Koleksi Publik