APA引文

(2001). More grammar practice. Boston, MA: Heinle & Heinle.

Trích dẫn kiểu Chicago

More Grammar Practice. Boston, MA: Heinle & Heinle, 2001.

MLA引文

More Grammar Practice. Boston, MA: Heinle & Heinle, 2001.

警告：这些引文格式不一定是100％准确.