Singapore Council of Social Service. (1979). Social service directory ([2d ed.].). Singapore Council of Social Service.
Chicago-referens (17:e uppl.)Singapore Council of Social Service. Social Service Directory. [2d ed.]. Singapore: Singapore Council of Social Service, 1979.
MLA-referens (8:e uppl.)Singapore Council of Social Service. Social Service Directory. [2d ed.]. Singapore Council of Social Service, 1979.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.