Reformasi kekuasaan presiden

 Surbakti, A. Ramlan;

Jakarta : Grasindo , 1998

Man of the people :the life of John McCain

 Alexander, Paul,; McCain, John;

Hoboken, NJ : : John Wiley & Sons , 0

The American legislative process: congress and the states

 Keefe, William J.; Ogul, Morris S.;

New Jersey : Prentice Hall , 2001

Congress :the electoral connection

 Mayhew, David R.;

New Haven : Yale University Press , 1974