Little, Brown and Company , 1998
Buku Teks
Ziegler, Philip
Alfred A. Knopf, 1991
Buku Teks
editor, Andreas C. Papadakis
Academy Editions, 1993
Buku Teks
Modupe, Prince
Harcourt Brace , 1957
Buku Teks
Machiavelli, Niccolo, author
Everyman's Library, 1992
Buku Teks