(2003). Everything you need, everywhere you need it before you need it: Serving Sanitary Industries.
Chicago-referens (17:e uppl.)Everything You Need, Everywhere You Need It Before You Need It: Serving Sanitary Industries. 2003.
MLA-referens (9:e uppl.)Everything You Need, Everywhere You Need It Before You Need It: Serving Sanitary Industries. 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.