Não informado. (2009). Interface Age, Computing for Business. MWJ Publishing Group.
Chicago-referens (17:e uppl.)Não informado. Interface Age, Computing for Business. Paramount, Calif: MWJ Publishing Group, 2009.
MLA-referens (8:e uppl.)Não informado. Interface Age, Computing for Business. MWJ Publishing Group, 2009.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.