एपीए उद्धरण

(1987). Long-term trends and underlying factors affecting steel consumption in the United States. Washington: U. S. department of Commerce.

शिकागो स्टाइल उद्धरण

Long-term Trends and Underlying Factors Affecting Steel Consumption in the United States. Washington: U. S. department of Commerce, 1987.

एमएलए उद्धरण

Long-term Trends and Underlying Factors Affecting Steel Consumption in the United States. Washington: U. S. department of Commerce, 1987.