Smith, R. W. (2005). LPIC-1: Linux Professional Institute Certification. Study guide (First edition.). Editorial Wiley Publishing.
Lua i Stíl Chicago (17ú heag.)Smith, Roderick W. LPIC-1: Linux Professional Institute Certification. Study Guide. First edition. Indianápolis: Editorial Wiley Publishing, 2005.
Lua MLA (8ú heag.)Smith, Roderick W. LPIC-1: Linux Professional Institute Certification. Study Guide. First edition. Editorial Wiley Publishing, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.