Παραπομπή APA

International Iron and Steel Institute. (1989). World steel in figures. Belgium: International Iron and Steel Institute.

Παραπομπή Chicago Style

International Iron and Steel Institute. World Steel in Figures. Belgium: International Iron and Steel Institute, 1989.

Παραπομπή MLA

International Iron and Steel Institute. World Steel in Figures. Belgium: International Iron and Steel Institute, 1989.

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