Birley, R. Speeches and documents un American history: 1818-1865.
Lua i Stíl Chicago (17ú heag.)Birley, Robert. Speeches and Documents Un American History: 1818-1865.
Lua MLA (8ú heag.)Birley, Robert. Speeches and Documents Un American History: 1818-1865.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.