BURNS, J. M. (1989). Goverment By The People James Macgregor; Burns; Peltason; Thomas E. Cronin. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)BURNS, James MacGregor. Goverment By The People James Macgregor; Burns; Peltason; Thomas E. Cronin. Prentice-Hall, 1989.
Lua MLA (8ú heag.)BURNS, James MacGregor. Goverment By The People James Macgregor; Burns; Peltason; Thomas E. Cronin. Prentice-Hall, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.