Burns, J. M., & Peltason, J. W. (1987). Government by the people: Bicentennial edition 1987-1989 (13th ed.). Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Burns, James MacGregor, agus J. W. Peltason. Government by the People: Bicentennial Edition 1987-1989. 13th ed. New York: Prentice-Hall, 1987.
Lua MLA (9ú heag.)Burns, James MacGregor, agus J. W. Peltason. Government by the People: Bicentennial Edition 1987-1989. 13th ed. Prentice-Hall, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.