एपीए उद्धरण

(1987). Certain seamless steel pipes and tubes from Japan. Washington: USITC.

शिकागो स्टाइल उद्धरण

Certain Seamless Steel Pipes and Tubes From Japan. Washington: USITC, 1987.

एमएलए उद्धरण

Certain Seamless Steel Pipes and Tubes From Japan. Washington: USITC, 1987.