Não informado. (2010). Northwest Medicine. Northwest Medical Publishing Association.
Chicago-referens (17:e uppl.)Não informado. Northwest Medicine. Seattle, Wash: Northwest Medical Publishing Association, 2010.
MLA-referens (8:e uppl.)Não informado. Northwest Medicine. Northwest Medical Publishing Association, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.