Não informado. (2001). Beach and pool and swimming. Hoffman-Harris.
Chicago-referens (17:e uppl.)Não informado. Beach and Pool and Swimming. New York: Hoffman-Harris, 2001.
MLA-referens (8:e uppl.)Não informado. Beach and Pool and Swimming. Hoffman-Harris, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.