APA引文

Không rõ. (2006). The Micro Economy today. NOTNXB.

Trích dẫn kiểu Chicago

Không rõ. The Micro Economy Today. NOTNXB, 2006.

MLA引文

Không rõ. The Micro Economy Today. NOTNXB, 2006.

警告：这些引文格式不一定是100％准确.