Nemo, Philippe, author
Duquesne University Press, 2006
Buku Teks
Toynbee, Arnold J., author
Meridian Books, 1958
Buku Teks
Columbia University Press, 1946
Buku Teks
edited by Brian Tierney, Donald Kagan, and L. Pearce Williams; consulting editor: Eugene Rice.
Random House, 1968
Buku Teks
Viorst, Milton, author
Chilton Book, 1965
Buku Teks