(1978). Materials for teaching English to speakers of other languages. London: The British Council, English Teaching Information Centre.
Chicago-tyylinen lähdeviittausMaterials for Teaching English to Speakers of Other Languages. London: The British Council, English Teaching Information Centre, 1978.
MLA-viiteMaterials for Teaching English to Speakers of Other Languages. London: The British Council, English Teaching Information Centre, 1978.
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