Smith, R. W. (2005). LPIC-1: Linux Professional Institute Certification. Study guide (First edition.). Editorial Wiley Publishing.
Chicago-referens (17:e uppl.)Smith, Roderick W. LPIC-1: Linux Professional Institute Certification. Study Guide. First edition. Indianápolis: Editorial Wiley Publishing, 2005.
MLA-referens (8:e uppl.)Smith, Roderick W. LPIC-1: Linux Professional Institute Certification. Study Guide. First edition. Editorial Wiley Publishing, 2005.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.