APA引文

Schoenberg, I. E. (2006). Focus on grammar: An integrated skills approach. New York, NY: Pearson/Longman.

Trích dẫn kiểu Chicago

Schoenberg, Irene E. Focus On Grammar: An Integrated Skills Approach. New York, NY: Pearson/Longman, 2006.

MLA引文

Schoenberg, Irene E. Focus On Grammar: An Integrated Skills Approach. New York, NY: Pearson/Longman, 2006.

警告：这些引文格式不一定是100％准确.