Chipongian, L. C. No new mining investments seen. Manila Bulletin.
Cita Chicago (17th ed.)Chipongian, Lee C. "No New Mining Investments Seen." Manila Bulletin .
Cita MLA (9th ed.)Chipongian, Lee C. "No New Mining Investments Seen." Manila Bulletin, .
Atenció: Aquestes cites poden no estar 100% correctes.