Tria, J. Competitiveness and our farms. Manila Bulletin.
Cita Chicago (17th ed.)Tria, John. "Competitiveness and Our Farms." Manila Bulletin .
Cita MLA (9th ed.)Tria, John. "Competitiveness and Our Farms." Manila Bulletin, .
Atenció: Aquestes cites poden no estar 100% correctes.