John Sinclair. (1995). Collins Cobuild English guides: Homophones. London: HarperCollins.
Trích dẫn kiểu ChicagoJohn Sinclair. Collins Cobuild English Guides: Homophones. London: HarperCollins, 1995.
MLA citiranjeJohn Sinclair. Collins Cobuild English Guides: Homophones. London: HarperCollins, 1995.
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