(1997). Perez opposes cement firm in Palawan coasts. Manila Bulletin.
Cita Chicago (17th ed.)"Perez Opposes Cement Firm in Palawan Coasts." Manila Bulletin 1997.
Cita MLA (9th ed.)"Perez Opposes Cement Firm in Palawan Coasts." Manila Bulletin, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.