Ronda, R. A. Finnish ore processing technology eyed for local steelmaking. The Philippine Star.
Chicago Style aipamenaRonda, Rainier Allan. "Finnish Ore Processing Technology Eyed for Local Steelmaking." The Philippine Star .
MLA aipamenaRonda, Rainier Allan. "Finnish Ore Processing Technology Eyed for Local Steelmaking." The Philippine Star, .
Kontuz: berrikusi erreferentzia hauek erabili aurretik.