APA ציטוט

O'Connell, S. (2002). Focus on IELTS. London: Pearson education.

Trích dẫn kiểu Chicago

O'Connell, Sue. Focus On IELTS. London: Pearson education, 2002.

ציטוט MLA

O'Connell, Sue. Focus On IELTS. London: Pearson education, 2002.