Não informado. (1967). Educational television international. Centre for Educational Television Overseas.
Style de citation Chicago (17e éd.)Não informado. Educational Television International. London: Centre for Educational Television Overseas, 1967.
Style de citation MLA (8e éd.)Não informado. Educational Television International. Centre for Educational Television Overseas, 1967.
Attention : ces citations peuvent ne pas être correctes à 100%.