Template:Wp/grc/Πρόεδρος τῶν ΗΠΑ/Διπλὴ Ἀρχή

  1. 1.0 1.1 1.2 Chronological List of Presidents, First Ladies, and Vice Presidents of the United States, Βιβλιοθήκη τοῦ Κογκρέσσου
  2. 2.0 2.1 Presidents whitehouse.gov