APA (7th ed.) Citation

Roman, I. M. (1990). Air pollution worsening. Manila Bulletin.

Chicago Style (17th ed.) Citation

Roman, Isidro M. "Air Pollution Worsening." Manila Bulletin 1990.

MLA (9th ed.) Citation

Roman, Isidro M. "Air Pollution Worsening." Manila Bulletin, 1990.

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