Não informado. (2000). The Presidency. American Council on Education.
Chicago-Zitierstil (17. Ausg.)Não informado. The Presidency. Washington: American Council on Education, 2000.
MLA-Zitierstil (8. Ausg.)Não informado. The Presidency. American Council on Education, 2000.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.