APA引文

(1999). Focus on Proficiency. Edinburgh Gate, Halow: Addison-Wesley Longman.

Trích dẫn kiểu Chicago

Focus On Proficiency. Edinburgh Gate, Halow: Addison-Wesley Longman, 1999.

MLA引文

Focus On Proficiency. Edinburgh Gate, Halow: Addison-Wesley Longman, 1999.

警告：這些引文格式不一定是100％准確.