APA引文

Roberts, R. (2004). IELTS foundation. Oxford: MacMillan Education.

Trích dẫn kiểu Chicago

Roberts, Rachael. IELTS Foundation. Oxford: MacMillan Education, 2004.

MLA引文

Roberts, Rachael. IELTS Foundation. Oxford: MacMillan Education, 2004.

警告：这些引文格式不一定是100％准确.