Smith, C. B. (1987). Spelling. Macmillan.
Lua i Stíl Chicago (17ú heag.)Smith, Carl B. Spelling. New York: Macmillan, 1987.
Lua MLA (9ú heag.)Smith, Carl B. Spelling. Macmillan, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.