Deismireacht APA

O'Connell, S. (2010). Focus on IELTS. Harlow, England: Pearson Education.

Trích dẫn kiểu Chicago

O'Connell, Sue. Focus On IELTS. Harlow, England: Pearson Education, 2010.

Deismireacht MLA

O'Connell, Sue. Focus On IELTS. Harlow, England: Pearson Education, 2010.

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