American President : from Teddy Roosevelt to Bill Clinton /

Eitemau Tebyg

• American president : from Teddy Roosevelt to Bill Clinton
  gan: Leuchtenburg, William E.
  Cyhoeddwyd: (2015)
• The state of the presidency /
  gan: Cronin, Thomas E.
  Cyhoeddwyd: (1980)
• The modern presidency
  gan: Pfiffner, James P
  Cyhoeddwyd: (2000)
• The presidency and the political system /
  Cyhoeddwyd: (2003)
• Encyclopedia of the American Presidency
  gan: Fisher, Louis; Editor, et al.
  Cyhoeddwyd: (1994)