APA引文

Nick Ham. (1999). Longman essential activator (Workbook). Essex, UK: Longman.

Trích dẫn kiểu Chicago

Nick Ham. Longman Essential Activator (Workbook). Essex, UK: Longman, 1999.

MLA引文

Nick Ham. Longman Essential Activator (Workbook). Essex, UK: Longman, 1999.

警告：这些引文格式不一定是100％准确.