APA-referens (7:e uppl.)
WALLEGHEM, M. (1989). SURVEY OF THE PRINCIPAL CARE FACILITIES FOR PEOPLE WITH MENTAL RETARDATION IN BELGIUM.
Chicago-referens (17:e uppl.)
WALLEGHEM, M.VAN. SURVEY OF THE PRINCIPAL CARE FACILITIES FOR PEOPLE WITH MENTAL RETARDATION IN BELGIUM. 1989.
MLA-referens (9:e uppl.)
WALLEGHEM, M.VAN. SURVEY OF THE PRINCIPAL CARE FACILITIES FOR PEOPLE WITH MENTAL RETARDATION IN BELGIUM. 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.