APA引文

United nations industrial development organization Vienna. (1973). The petrochemical industry. New York: United Nation.

Trích dẫn kiểu Chicago

United nations industrial development organization Vienna. The Petrochemical Industry. New York: United Nation, 1973.

MLA引文

United nations industrial development organization Vienna. The Petrochemical Industry. New York: United Nation, 1973.

警告：这些引文格式不一定是100％准确.