APA (7th ed.) Citation

Santiago, R. (2011). Metro Manila's watershed. Manila Bulletin.

Chicago Style (17th ed.) Citation

Santiago, Roni. "Metro Manila's Watershed." Manila Bulletin 2011.

MLA (9th ed.) Citation

Santiago, Roni. "Metro Manila's Watershed." Manila Bulletin, 2011.

Warning: These citations may not always be 100% accurate.