Cogan. Union and States' Rights. The University of Akron Press.
Lua i Stíl Chicago (17ú heag.)Cogan. Union and States' Rights. The University of Akron Press.
Lua MLA (8ú heag.)Cogan. Union and States' Rights. The University of Akron Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.