APA引文

(1977). Malleable cast iron pipe and tube fittings. Washington: USITC.

Trích dẫn kiểu Chicago

Malleable Cast Iron Pipe and Tube Fittings. Washington: USITC, 1977.

MLA引文

Malleable Cast Iron Pipe and Tube Fittings. Washington: USITC, 1977.

警告：这些引文格式不一定是100％准确.