O'Connell, S. (1996). Focus on first certificate for revised exam. [New York]: Longman.
Trích dẫn kiểu ChicagoO'Connell, Sue. Focus On First Certificate for Revised Exam. [New York]: Longman, 1996.
MLA citiranjeO'Connell, Sue. Focus On First Certificate for Revised Exam. [New York]: Longman, 1996.
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