(2003). The United States Executive Branch: A biographical directory of heads of state and cabinet officials. Greenwood Press.
Chicago-Zitierstil (17. Ausg.)The United States Executive Branch: A Biographical Directory of Heads of State and Cabinet Officials. Westport, Conn. [u.a.]: Greenwood Press, 2003.
MLA-Zitierstil (9. Ausg.)The United States Executive Branch: A Biographical Directory of Heads of State and Cabinet Officials. Greenwood Press, 2003.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.