Bone, Robert G., author
Littlefield, Adam, 1957
Buku Teks
Leonard, Jonathan Norton, author
Time-Life Books, 1967
Buku Teks
Casson, Lionel, author
Time-Life Books, 1965
Buku Teks
Schafer, Edward H., author
Time-Life International, 1968
Buku Teks
James, Peter, author
Ballantine Books, 2001
Buku Teks