एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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