Szász, F. A. (1981). Radicals of rings. John Wiley and Sons.
Lua i Stíl Chicago (17ú heag.)Szász, F. A. Radicals of Rings. Chichester: John Wiley and Sons, 1981.
Lua MLA (9ú heag.)Szász, F. A. Radicals of Rings. John Wiley and Sons, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.