APA ציטוט

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.

ציטוט MLA

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