Não informado. (1967). Educational television international. Centre for Educational Television Overseas.
Čikaški stil citiranja (17. izdanje)Não informado. Educational Television International. London: Centre for Educational Television Overseas, 1967.
MLA način citiranja (8. izdanje)Não informado. Educational Television International. Centre for Educational Television Overseas, 1967.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.