Brown, D. (2009). Fortaleza digital. Bertrand.
Lua i Stíl Chicago (17ú heag.)Brown, Dan. Fortaleza Digital. Bertrand, 2009.
Lua MLA (8ú heag.)Brown, Dan. Fortaleza Digital. Bertrand, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.