Yates, Steve, author
Facts On File, 1992
Buku Referensi
Clausewitz, Carl von, author
A Millennium Project, 1993
Buku Referensi
Lexington Books, 2013
Buku Teks
Bowen, Elizabeth, 1899-1973, author
Continental Book Company, 1946
Buku Teks
Bleznick, Donald W.
Scarecrow Press, 1983
Buku Referensi