1
2
Published 1991
3
by Macgregor, Douglas A.
Published 2003
4
by Odom, William E.
Published 1992
5
by Brzezinski, Zbigniew
Published 1993
6
by Copson, Raymond W.
Published 1994
7
Published 1990
8
9
Published 2002
10
Published 1994
11
12
by Goldstein, Lyle
Published 2006
13
by Fukuyama Francis
Published 2006
14
15
Published 2004
16
by Robinson, William I.
Published 1996
17
18
by Van Creveld, Martin L.
Published 1991
19
Published 1996
20
by Minahan, James
Published 1996