DANIEL, J. L. Global Vision. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)DANIEL, John L. Global Vision. McGraw-Hill.
Lua MLA (8ú heag.)DANIEL, John L. Global Vision. McGraw-Hill.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.