APA引文

Marc Helgesen. (1998). Travel File (Teacher's manual). London: Longman.

Trích dẫn kiểu Chicago

Marc Helgesen. Travel File (Teacher's Manual). London: Longman, 1998.

MLA引文

Marc Helgesen. Travel File (Teacher's Manual). London: Longman, 1998.

警告：這些引文格式不一定是100％准確.