APA引文

(1970). Problems of air and water pollution arising in the iron and steel industry. New York: United Nations.

Trích dẫn kiểu Chicago

Problems of Air and Water Pollution Arising in the Iron and Steel Industry. New York: United Nations, 1970.

MLA引文

Problems of Air and Water Pollution Arising in the Iron and Steel Industry. New York: United Nations, 1970.

警告：這些引文格式不一定是100％准確.