Não informado. (2000). University of Michigan official publication. University of Michigan.
Chicago-referens (17:e uppl.)Não informado. University of Michigan Official Publication. Ann Arbor, Mich: University of Michigan, 2000.
MLA-referens (8:e uppl.)Não informado. University of Michigan Official Publication. University of Michigan, 2000.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.