Dyfyniad APA

(1989). Annual survey concerning competitive conditions in the steel industry and industry efforts to adjusts and modernize. Washington: USITC.

Dyfyniad Arddull Chicago

Annual Survey Concerning Competitive Conditions in the Steel Industry and Industry Efforts to Adjusts and Modernize. Washington: USITC, 1989.

Dyfyniad MLA

Annual Survey Concerning Competitive Conditions in the Steel Industry and Industry Efforts to Adjusts and Modernize. Washington: USITC, 1989.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.