Butler, E. (1987). Corret writing (4ª ed.). D. C. Heath.
Lua i Stíl Chicago (17ú heag.)Butler, Eugenia. Corret Writing. 4ª ed. D. C. Heath, 1987.
Lua MLA (9ú heag.)Butler, Eugenia. Corret Writing. 4ª ed. D. C. Heath, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.