(1983). Grolier academic encyclopedia. Grolier International.
Lua i Stíl Chicago (17ú heag.)Grolier Academic Encyclopedia. Grolier International, 1983.
Lua MLA (8ú heag.)Grolier Academic Encyclopedia. Grolier International, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.