Moody, William Vaughn
Charles Scribner's Sons, 1943
Buku Teks
Needleman, Morris H., author
Barnes & Noble, 1939
Buku Teks
Otis, William Bradley, author
Barnes & Noble, 1939
Buku Teks
Rayfield, Donald
Curzon, 2000
Buku Teks
edited by A.W. Ward and A.R. Waller
Macmillan, 1939
Buku Teks