Changing of the guard : power and leadership in America /

द्वारा Broder, David S.
प्रकाशित 1980

The power structure : political process in American society /

द्वारा Rose, Arnold Marshall, 1918-1968
प्रकाशित 1967

Bound to lead : the changing nature of American power /

द्वारा Nye, Joseph S.
प्रकाशित 1990