एपीए उद्धरण

(1980). Butt weld pipe fittings from Japan. Washington: USITC.

शिकागो स्टाइल उद्धरण

Butt Weld Pipe Fittings From Japan. Washington: USITC, 1980.

एमएलए उद्धरण

Butt Weld Pipe Fittings From Japan. Washington: USITC, 1980.