Dixson, R. (1950). Practical guide. Regents.
Lua i Stíl Chicago (17ú heag.)Dixson, Robert. Practical Guide. New York: Regents, 1950.
Lua MLA (9ú heag.)Dixson, Robert. Practical Guide. Regents, 1950.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.