Caoili, C. S. (1997). Scientists say red tide good source of pharmaceutical drugs. Manila Bulletin.
Cita Chicago (17th ed.)Caoili, Carayo S. "Scientists Say Red Tide Good Source of Pharmaceutical Drugs." Manila Bulletin 1997.
Cita MLA (9th ed.)Caoili, Carayo S. "Scientists Say Red Tide Good Source of Pharmaceutical Drugs." Manila Bulletin, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.