(1982). World English ( Teacher's book ). Orlando, FL: Harcourt, Brace International.
Trích dẫn kiểu ChicagoWorld English ( Teacher's Book ). Orlando, FL: Harcourt, Brace International, 1982.
Deismireacht MLAWorld English ( Teacher's Book ). Orlando, FL: Harcourt, Brace International, 1982.
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