(1978). ELT documents: English as an international language. London: British Council.
Chicago-стиль цитированияELT Documents: English As an International Language. London: British Council, 1978.
MLA-цитированиеELT Documents: English As an International Language. London: British Council, 1978.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.