Ronda, R. A. Finnish ore processing technology eyed for local steelmaking. The Philippine Star.
Cita Chicago (17th ed.)Ronda, Rainier Allan. "Finnish Ore Processing Technology Eyed for Local Steelmaking." The Philippine Star .
Cita MLA (9th ed.)Ronda, Rainier Allan. "Finnish Ore Processing Technology Eyed for Local Steelmaking." The Philippine Star, .
Atenció: Aquestes cites poden no estar 100% correctes.