Leavitt, L. W. Great men and women (3a ed.).
Lua i Stíl Chicago (17ú heag.)Leavitt, Leslie W. Great Men and Women. 3a ed.
Lua MLA (8ú heag.)Leavitt, Leslie W. Great Men and Women. 3a ed.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.