Não informado. (1963). CETO news. Centre for Educational Television Overseas.
Chicago-referens (17:e uppl.)Não informado. CETO News. London: Centre for Educational Television Overseas, 1963.
MLA-referens (8:e uppl.)Não informado. CETO News. Centre for Educational Television Overseas, 1963.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.