|
1.
|
Washington, D.C. : Brookings Institution Press, c2000.
|
|
2.
|
Washington, D.C. : CQ Press, c2012.
|
|
3.
|
Washington, DC : CQ Press, c2007.
|
|
4.
|
Washington, D.C. : CQ Press, c1995.
|
|
5.
|
Washington, DC : CQ Press, [2012] ©2012
|
|
6.
|
Boston : Bedford/St. Martin's, c2000.
|
|
7.
|
New York : W.W. Norton, 1998.
|
