APA引文

Greenaway, D. (1979). Protectionism again...? London: The Institute of Economic Affairs.

Trích dẫn kiểu Chicago

Greenaway, David. Protectionism Again...? London: The Institute of Economic Affairs, 1979.

MLA引文

Greenaway, David. Protectionism Again...? London: The Institute of Economic Affairs, 1979.

警告：這些引文格式不一定是100％准確.